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# Class 8 Mathematics questions and answers on percentage increase and decrease

Class 8 Mathematics questions and answers on percentage increase and decrease

Lessons (**34**)

- 1.
The population of a town increased from 40000 to 64000. What was the percentage increase?
A. 37.5
B. 62.5
C. 160.0
D. 60.0

2m 58s - 2.
A farmer had 120 animals of which 50% were cattle, 30% goats and the rest sheep. He increased the number of goats by 25%, sheep by 50% and decreased the number of cattle by 20%. How many animals did he finally have?
A. 186
B. 153
C. 135
D. 129

8m 50s - 3.
The number of people who attended a two-day exhibition dropped from 2500 on the first day to 2400 on the second day. What was the percentage decrease in attendance?
A. 4.0%
B. 4.17%
C. 96.0%
D. 95.83%

2m 35s - 4.
During a tree planting season, the number of tree planted in May was 10% more than the number of trees planted in June. If the number of trees planted in May was 9900, how many trees were planted in June?
A. 9000
B. 10890
C. 11000
D. 8910

2m 47s - 5.
The marked price of a dress was sh 400. After a price increase, the marked price of the dress became sh 450. What was the percentage increase?
A. 11 #frac{1}{9}# %
B. 112 #frac{1}{2}# %
C. 88#frac{8}{9}# %
D. 12#frac{1}{2}# %

3m 5s - 6.
In April a posho mill packed 25000 bales of unga. In the previous month, 20000 bales had been packed. What was the percentage increase in the number of bales of unga?
A. 20%
B. 80%
C. 25%
D. 125%

2m 10s - 7.
The population of a town in 1992 had increased by 20%. If the population of the town in 1991 was 480000, what was its population in 1992?
A. 9600
B. 384000
C. 400000
D. 576000

4m 5s - 8.
Ali weighed 100kg. After some illness his weight reduced by 10%. A week later he lost a further 10%. What was his weight at the end of the week?
A. 90kg
B. 81kg
C. 80kg
D. 72kg

4m 8s - 9.
After increase of 25%, Igoki’s salary became sh 3125. What was her salary before the increase?
A. Sh 2343.75
B. Sh 2500.00
C. Sh 3100.00
D. Sh 3906.25

2m 47s - 10.
The level of water in a dam was decreasing by 20% each day. If the level of the water was 1500cm, what was the
level after two days?
A. 900cm
B. 1460cm
C. 1200cm
D. 960cm

3m 2s - 11.
In 1994 Kihara picked 12100kg of tea from his farm. In 1995 he picked 10% more kilograms of tea than 1994. How many kilograms of tea did he pick in 1995?
A. 1210kg
B. 10890kg
C. 11000kg
D. 13310kg

3m 26s - 12.
The weight of a 90kg bag of maize decreased to 75kg after drying. What was the percentage decrease in
weight?
A. 15%
B. 16#frac{2}{3}# %
C. 20%
D. 83 #frac{1}{3}# %

3m 38s - 13.
A factory produced 10000kg of coffee on the first day and 8000kg on the second day. What was the percentage
decrease in the production?
A. 20%
B. 25%
C. 80%
D. 125%

2m 31s - 14.
In one shop, an item was selling for sh 400. After sometime the same item was sold for sh 500. What was the
percentage increase in the selling price?
A. 20%
B. 25%
C. 80%
D. 125%

2m 15s - 15.
A farm yielded 600bags of wheat in 1996. This was a 20% decrease in yield from 1995. How many bags of
wheat did the farm yield in 1995?
A. 750 bags
B. 720bags
C. 500bags
D. 480bags

3m 36s - 16.
During one month, a kiosk owner made a profit of sh 6180. The following month his profit increased to sh
8240. What was the percentage increase in profit?
A. 25%
B. 33#frac{1}{3}# %
C. 75%
D. 133#frac{1}{3}# %

5m 3s - 17.
The price of sugar increased from sh 40 to sh 50 per kg. What was the percentage increase?
A. 125%
B. 10%
C. 25%
D. 20%

1m 46s - 18.
A carpenter wanted to make 192 round tables and 128 rectangular tables. He later decided to decrease the number of round tables by 25% and to increase the number of rectangular ones by 25%. How many tables did
he make altogether?
A. 240
B. 304
C. 320
D. 336

5m 51s - 19.
The marked price of a pair of shoes was sh 250. During a sale the price was reduced to sh 200. What was the percentage decrease in price?
A. 80%
B. 50%
C. 25%
D. 20%

3m 4s - 20.
Flour is packed in 2.5kg packets. If the weight of flour in the packets is increased by 25%, what would be the new
weight of the packet?
A. 3.125kg
B. 2kg
C. 1.875kg
D. 0.625kg

3m 23s - 21.
The bus fare from one town to another was decreased by 20% and later increased by 20%. If the original fare was
sh 50, what is the new fare?
A. Sh 32
B. Sh 40
C. Sh 48
D. Sh 50

4m 33s - 22.
In one year the population of gazelles in a park was 3400. In the following, the population reduced by 25%. What was the size of the population of gazelles after the reduction?
A. 850
B. 4250
C. 3375
D. 2550

1m 29s - 23.
In the year 2002, the number of pupils in a schools was 800. In 2003 the number of pupils increased by 40%. How many pupils were there in 2003?
A. 320
B. 480
C. 840
D. 1120

3m 50s - 24.
A playing field measured 50m by 30m. The measurements of the sides of the field were later increased to 80m by 60m. What was the percentage increase of the area of the field?
A. 4800
B. 3300
C. 900
D. 220

6m 5s - 25.
The length of a rectangular plot is 30m and the width is 20m. Each side of the plot is increased by 10%. What is
the increase in the area of the plot?
A. #6m^2#
B. #126m^2#
C. #600m^2#
D. #726m^2#

7m 48s - 26.
In year 2005, enrollment in a school was 450. In the year 2006, the enrollment decreased by 10% from that year of 2005. The enrollment increased by 20% in year 2007. What was the enrollment in the year 2007?
A. 396
B. 486
C. 495
D. 584

6m 12s - 27.
The number of tree seedlings planted in a certain season increased by 20%. If there were 24000 seedlings planted in that season, how many seedlings were there before the increase?
A. 19200
B. 20000
C. 28800
D. 30000

3m 30s - 28.
The price of an article in a shop was increased by 10%. The following month the price was decreased by 20%. The price of the article after the decrease was sh 79200. What was the original price before the increase?
A. Sh 72000
B. Sh 88000
C. Sh 90000
D. Sh 99000

1m 48s - 29.
The price of an item increased from sh 400 to sh 500. What was the percentage increase?
A. 125%
B. 80%
C. 25%
D. 20%

1m 48s - 30.
A farmer harvested 1200 crates of tomatoes in the year 2011. This was a 20% decrease from the year 2010.
How many crates of tomatoes did the farmer harvest in the year 2010?
A. 1500
B. 1440
C. 960
D. 240

3m 48s - 31.
The level of fuel in a container decreased by 2% each hour. If the capacity of fuel in the container was 1600litres, what was the capacity after 2 hours?
A. 1664.64l
B. 1568l
C. 1536.64l
D. 1536l

3m 4s - 32.
A soccer ball is dropped from height of 240cm. For every bounce the height decreases by 60%. How high will the ball rise on the second bounce?
A. 38.4cm
B. 86.4cm
C. 96cm
D. 144cm

5m 39s - 33.
Mogaka pays sh 300 for his transport, sh 400 for his 2 sons and sh 100 for his sister daily. If the fare went up by
15%, how much will he spend in six days?
A. Sh 5520
B. Sh 4800
C. Sh 4080
D. Sh 920

4m 24s - 34.
A group of farmers harvested 10000kg of coffee on the first day and 8000kg on the second day. What percentage decrease in the amount of coffee harvested?
A. 20%
B. 24%
C. 80%
D. 125%

2m 23s