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Three grades A,B and C of rice were mixed in the ratio 3:4:5.The cost per kg of each of the grades A,B and C were ksh.120,ksh.90 and ksh.60 respectively. calculate
a.the cost of 1kg of the mixture
b.the selling price of 5kg of the mixture given that the mixture was sold at 8% profit.
Date posted:
December 13, 2017
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water and milk are mixed such that the ratio of the volume of water to that of milk is 4:1. Taking the density of water as 1g/cm^3 and that of milk as 1.2g/cm^3, find the mass in grammes of 2.5 litres of the mixture.
Date posted:
December 13, 2017
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The probability that the school team wins a match is 0.6. The probability that the team loses is 0.3 and the probability that the team has is 0.1. The team plays 3 games. What is the probability that the team;(a)wins two matches
(b)either wins all the matches or loses all the matches
(c)wins one match,loses one and ties in one
Date posted:
December 9, 2017
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This is under trigonometry
Date posted:
November 21, 2017
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Nafula broke three beakers and 4 test tubes and Munyao broke two beakers and 5 test tubes during practicals in the laboratory. If Nafula was charged Sh 560 and Munyao Sh 490 for the breakages, find the cost of one beaker and one test tube.
Date posted:
November 20, 2017
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A businessman wants to have sh. 40000 in 8 years. How much money must he invest now if the rate of interest is 7.5% p.a. compound interest?
Date posted:
November 16, 2017
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Find without using tables if 2 + log 3 +log y = log 5 +1
Date posted:
November 16, 2017
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Write log 1000 – 2 log 50 as a logarithm of a single number
Date posted:
November 15, 2017
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Truncate 661.7 to
a. 3 significant figures
b. 2 significant figures
Date posted:
November 10, 2017
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It cost Robert 150% more to rent his house than it used to 10 years ago when the rent was sh. 15000 per month. How much rent does he pay now?
Date posted:
October 27, 2017
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A mason was paid sh. 36000 to completely build a house. What was the total cost of the building if this amount constituted 15% of the cost?
Date posted:
October 27, 2017
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A farmer has 3 containers f capacity 48 litres, 36 litres, and 30 litres. Find the capacity of
a. The smallest vessel that can be filled by each one of them an exact number f times.
b. The largest container that can be used to fill each one of them an exact number of times.
Date posted:
October 27, 2017
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An empty basket mass is w kg. Forty eggs each of mass x grams are placed in the basket. Find the mass of y such basket.
Date posted:
October 22, 2017
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A certain number is add to 2/5 of itself. If the sum is doubled, write down the final statement
Date posted:
October 21, 2017
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Calculate the length of the base of a triangle whose height is equal to the length of the base and its area is 60.5 cm^2.
Date posted:
October 19, 2017
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Evaluate
a. 3.4 x 5 =
b. 44 x 0.206 =
c. 295 x 36.04 =
d. 39.6 x 6.21 =
Date posted:
October 18, 2017
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The town of Kericho is found on the Kisumu – Nakuru highway. The distance between Kisumu and kericho is 86 km, while that between Kericho and Nakuru is 106 km. what is the distance between Nakuru and Kisumu?
Date posted:
October 17, 2017
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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
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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
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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
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What is the greatest mass that can be taken in an exact number of times from 288, 432, 252
Date posted:
October 12, 2017
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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
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Convert speed of 120 km/h to m/s
Date posted:
October 11, 2017
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A lorry can travel 180 km on 20 litres of diesel. How far can it go on 15 litres of diesel?
Date posted:
October 11, 2017
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A car was driven for 2 hours at 100 km/h. It was driven for 1 ½ hrs at a different speed. Given that the average velocity for the whole journey was 90 km/h, what was the average speed for the latter part of the journey?
Date posted:
October 10, 2017
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Dan traveled from two towns A and B which are 50 km apart. He used a bike at a speed of 20 km/h for 1 ½ hours and then walked for the remaining distance at speed of 2 km/h. Find average speed for the journey.
Date posted:
October 10, 2017
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Find the volume of a prism 30 cm long and its cross-section is regular, pentagon of side 10 cm.
Date posted:
October 2, 2017
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Find the value of sin 60⁰ , Cos 60⁰ and Tan 60⁰ without using the mathematical tables.
Date posted:
September 30, 2017
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On a map with a scale of 1:500 000, a coffee plantation covers an area of 20 cm^2 . Find the actual area of the plantation I hectares.
Date posted:
September 29, 2017
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A car travels 100 km in (¾) hour. How far will it travel in 20 min?
Date posted:
September 26, 2017