Total mass = 20 kg =20000g
Mass of 12 cakes = 400 x 12
=4800 g
Mass of 18 cakes = 20000- 4800
=15200 g
Mean of 18 cakes = 15200/18
=844.44 g
joseph rimiru answered the question on October 16, 2017 at 18:56
-
A capillary tube which is 2 cm^3 is filled with mercury. If the length of the mercury is 1.5 m, calculate the radius of the...
(Solved)
A capillary tube which is 2 cm^3 is filled with mercury. If the length of the mercury is 1.5 m, calculate the radius of the bore of the capillary tube.
Date posted:
October 16, 2017
.
Answers (1)
-
Some decoration lights were programmed at intervals of 40 seconds, 50 seconds, 60 seconds, and 75 seconds. What is the earliest time they will give...
(Solved)
Some decoration lights were programmed at intervals of 40 seconds, 50 seconds, 60 seconds, and 75 seconds. What is the earliest time they will give out light signals simultaneously if the last time they did this was at 9.15 a.m.?
Date posted:
October 16, 2017
.
Answers (1)
-
A cement factory packed it in 20kg, 25kg, 40kg, and 50kg. find the least amount of cement that can be packed into these bag equally.
(Solved)
A cement factory packed it in 20kg, 25kg, 40kg, and 50kg. find the least amount of cement that can be packed into these bag equally.
Date posted:
October 16, 2017
.
Answers (1)
-
Find the least mass of meat a butcher can cut into equal amount of 2 kg, 4kg, 5kg, or 6kg.
(Solved)
Find the least mass of meat a butcher can cut into equal amount of 2 kg, 4kg, 5kg, or 6kg.
Date posted:
October 16, 2017
.
Answers (1)
-
What is the greatest mass that can be taken in an exact number of times from 288, 432, 252
(Solved)
What is the greatest mass that can be taken in an exact number of times from 288, 432, 252
Date posted:
October 12, 2017
.
Answers (1)
-
Three containers can hold 72,168, and 180 litres of water. Determine the capacity of the greatest vessel which can be used to fill each one...
(Solved)
Three containers can hold 72,168, and 180 litres of water. Determine the capacity of the greatest vessel which can be used to fill each one of them in an exact number of times.
Date posted:
October 12, 2017
.
Answers (1)
-
Find the greatest common divisor (G.C.D.) of the following pairs of numbers. (a) 120 ,90 (b)72, 128
(Solved)
Find the greatest common divisor (G.C.D.) of the following pairs of numbers.
a. 120 ,90
b. 72, 128
Date posted:
October 12, 2017
.
Answers (1)
-
Express the following values in terms of their factors (a) 600 (b) 486
(Solved)
Express the following values in terms of their factors
a. 600
b. 486
Date posted:
October 12, 2017
.
Answers (1)
-
Daniel had 3543 bags of beans each weighing 50 kg. He sold 2443 of them (a) How many kilograms of beans was he left with (b) If he...
(Solved)
Daniel had 3543 bags of beans each weighing 50 kg. He sold 2443 of them.
a. How many kilograms of beans was he left with
b. If he added 578 more bags of beans, how many bags did he end up with?
Date posted:
October 12, 2017
.
Answers (1)
-
A certain fabric 20 m long cost ksh 3000. What would be the cost of similar material 5 m longer?
(Solved)
A certain fabric 20 m long cost sh 3000. What would be the cost of similar material 5m longer?
Date posted:
October 12, 2017
.
Answers (1)
-
A tractor takes 10 days to cultivate a plot of land 3 hectares in area. What area of land will be cultivated in 25 days...
(Solved)
A tractor takes 10 days to cultivate a plot of land 3 hectares in area. What area of land will be cultivated in 25 days working at the same rate?
Date posted:
October 12, 2017
.
Answers (1)
-
Twelve men working five hours a day take 10 days to complete a job. How long will it take six men working 12 hour a...
(Solved)
Twelve men working five hours a day take 10 days to complete a job. How long will it take six men working 12 hour a day to complete the same task.
Date posted:
October 12, 2017
.
Answers (1)
-
An express train takes 2 hours to travel between two stations at an average speed of 75 km/h. At what average speed would it need...
(Solved)
An express train takes 2 hours to travel between two stations at an average speed of 75 km/h. At what average speed would it need to travel in order to cover the same distance in 3 hours?
Date posted:
October 12, 2017
.
Answers (1)
-
Use the ratios method to find how far a car can travel on 24 litres if it can travel for 30 km on 3 litres.
(Solved)
Use the ratios method to find how far a car can travel on 24 litres if it can travel for 30 km on 3 litres.
Date posted:
October 12, 2017
.
Answers (1)
-
The profit of a company was divided between new plants, reverse and dividends are 4:3:11. If the profit is sh 900000, what was the amount...
(Solved)
The profit of a company was divided between new plants, reverse and dividends are 4:3:11. If the profit is sh 900000, what was the amount put in dividends?
Date posted:
October 12, 2017
.
Answers (1)
-
Find the angles of quadrilateral which are in the ratio 6:4:5:3
(Solved)
Find the angles of quadrilateral which are in the ratio 6:4:5:3
Date posted:
October 12, 2017
.
Answers (1)
-
A 144 hectare farm is to be shared among three sons in the ratio 3:2:4. What will be the size in hectares of the three...
(Solved)
A 144 hectare farm is to be shared among three sons in the ratio 3:2:4. What will be the size in hectares of the three shares?
Date posted:
October 12, 2017
.
Answers (1)
-
Decrease the value 60 in the ratio 2:3
(Solved)
Decrease the value 60 in the ratio 2:3
Date posted:
October 11, 2017
.
Answers (1)
-
Increase 40 in the ratio 6:5
(Solved)
Increase 40 in the ratio 6:5
Date posted:
October 11, 2017
.
Answers (1)
-
From a certain farm 400 bags of maize were harvested. How many bags of maize would be harvested from 18 ha if the production standards...
(Solved)
From a certain farm 400 bags of maize were harvested. How many bags of maize would be harvested from 18 ha if the production standards were maintained?
Date posted:
October 11, 2017
.
Answers (1)