Compound Proportions And Rates Of Work Questions and Answers

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Mary and Jane working together can cultivate a piece of land in 6 days.Mary alone can complete the work in 15 days.After the two had worked for 4 days Mary withdrew from the services.Find the time taken by Jane to complete the remaining work

asked Dec 27, 2023 in Mathematics Form 3 by 0759967XXX

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3 answers

given a:b=6:7 and b:c=14:17 find a:b:c

asked Aug 23, 2023 in Mathematics Form 3 by 0729413XXX

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3 answers

(M+n):(M-n)=8:3 find ratio M:n

asked Dec 23, 2022 in Mathematics Form 3 by 0778746XXX

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1 answer

Three people A,B and C can do a piece of work in 45 hours,40hours and 30hours respectively.How long can B take to complete the remaining work alone,if he starts after A and C have worked for 13hours each?

asked Mar 28, 2022 in Mathematics Form 3 by Nbacalvo

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1 answer

mogaka and Onduso working together can do a piece of work in six days.mogaka , working alone takes five days longer than Onduso. How many days does it take Onduso to work alone?

asked Dec 28, 2021 in Mathematics Form 3 by judge

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1 answer

Two pipes A and B can fill an empty tank in 3hrs and 5hrs respectively. Pipe C can empty the tank in 4hrs. If the three pipes A, B and C are opened at the same time find how long it will take for the tank to be full.

asked Aug 13, 2021 in Mathematics Form 1 by anonymous

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6 answers

Five people can build 3 huts in 21 days. Find the number of people, working at the same rate that will build 6 similar huts in 15 days

asked Jul 22, 2021 in Mathematics Form 3 by Roseruguru

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1 answer

A construction company employs technicians and artisans. On a certain 3 technicians and 2 artisans were hired and paid a total of Ksh 9,000.

asked Jul 21, 2021 in Mathematics Form 3 by anonymous

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1 answer

A water vendor has a tank of capacity18,9000 litres. The tank is being filled with water from two pipes A and B which are closed immediately when the tank is full. Water flows at the rate 150,000cm3/minute through pipe B.

asked Jul 21, 2021 in Mathematics Form 3 by anonymous

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1 answer

Peter, John and Ronny working together take 30 minutes to slash a piece of land. peter and Ronny together take 40 minutes while peter and John together take 45 minutes. How long would each one of them take to slash the same piece of land

asked Jun 30, 2021 in Mathematics Form 3 by anony mous

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