5 men and 12 boys finish a piece of work in 4 days. 7 men and 6 boys do it in 5 days. The ratio between the efficiencies of a man and of a boy is Options: A . &nbsp5 : 6 B . &nbsp6 : 5 C . &nbsp8 ; 9 D . &nbsp9 : 8

5 men and 12 boys finish a piece of work in 4 days. 7 men and 6 boys do it in

Question

5 men and 12 boys finish a piece of work in 4 days. 7 men and 6 boys do it in 5 days. The ratio between the efficiencies of a man and of a boy is

Options:

A . 5 : 6

B . 6 : 5

C . 8 ; 9

D . 9 : 8

Answer: Option B

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Question 1. If A, B and C together can finish a piece of work in 4 days, A alone in 12 days and B in 18 days, then C alone can do....in 18 days, then C alone can do it in

Question 2. A takes twice as long as B and C together take to do a piece of work and B takes twice as long as A and C together. H....How long would C alone take to do the work?

Question 3. A can do half of a piece of work in one day whereas B can do full. B can do half the work as C in one day. Ratio of t....as C in one day. Ratio of their efficiencies is

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Question 5. A is twice as good a workman as B and they together took 7 days to do a piece of work. B alone can do it in ....

Question 6. A can do a piece of work in 40 days. B can do the same in 30 days. A started alone but left the work after 10 days, t....10 days. C alone can do the whole work in

Question 7. If 5 men or 9 boys can do a piece of work in 15 days then 10 men and 12 boys can finish the same work in ....

Question 8. Some persons can do a piece of work in 12 days. Two times the number of these persons will do half of that work in ....of these persons will do half of that work in

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Question 10. Father is two times faster than his son. If father and son can complete a job in 12 days how long will it take for the s....take for the son alone to complete the same job?

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