A job can be done by 3 skilled workmen in 20 days or by 5 boys in 30 days. How m

Question

A job can be done by 3 skilled workmen in 20 days or by 5 boys in 30 days. How many days will they take if they work together ?

Options:

A . 8 days

B . 10 days

C . 11 days

D . 12 days

Answer: Option D

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Question 1. A does 20% less work than B. If A can complete a piece of work in $$7\frac{1}{2}$$ hours, then B can do it in ?....

Question 2. A can do a piece of work in 6 days. B is 25% more efficient than A. How long would B alone take to finish this work ?....

Question 3. A takes three times as long as B and C together to do a job. B takes four times as long as A and C together to do the wo....alone will take to finish the job is = ?

Question 4. Five men are working to complete a work in 15 days. After five days 10 women are accompanied by them to complete the wor....work be over if 10 women have started it ?

Question 5. A contractor undertake to do a piece of work in 40 days. He engages 100 men at the beginning and 100 more after 35 days ....behind the scheduled the work should have been finished ?

Question 6. A man, a woman and a boy can do a piece of work in 6, 9 and 18 days respectively. How many boys must assist one man and ....one woman to do the work in 1 day ?

Question 7. A man is twice as fast as a women and a woman is twice as fast as a boy in doing a work. If all of them, a man , a woman....in 7 days, a boy will do it alone ?

Question 8. A's 2 days work is equal to B's 3 days work. If A can complete the work in 8 days, then to complete the work B will take....days, then to complete the work B will take ?

Question 9. If A, B and C can complete a piece of work in 6 days. If A can work twice faster than B and thrice faster then C, than t....of days C alone can complete the work is ?

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