If 10 cats can kill 10 rats in 10 minutes how long will it take 100 cats to kill 100 rats?

Raj can do a piece of work in 20 days. He started the work and left after some days, when 25% work was done. After it Abhijit joined and completed it working for 10 days. In how many days Raj and Abhijit can do the complete work, working together?

• [A] 6
• [B] 8
• [C] 10
• [D] 12

A man, a woman, and a child can do a piece of work in 6 days. Man only can do it in 24 days. Woman can do it in 16 days and in how many days child can do the same work?

• [A] 8
• [B] 14
• [C] 16
• [D] 18
• [E] None of these

A and B working together completed a job in 5 days. If A works twice as efficiently as he actually did and B works 1/3 of actual efficiency, the work would have completed in 3 days. Find the for A to complete the job alone.

• [A] 6(1/2)
• [B] 6(1/4)
• [C] 6(3/4)
• [D] 12(1/2)
• [E] None of these

If 8 men 8 hrs per day work for 8 days get 45/- then how many men required if the work is 5 hrs per day for 10 days they get 60/-?

• [A] 13
• [B] 15
• [C] 12
• [D] 14
• [E] 20

A and B can do a job together in 7 days. A is 1 ³/₄ times as efficient as B. The same job can be done by A alone in :

• [A] 9 ¹/₃ days
• [B] 11 days
• [C] 12 ¹/₄ days
• [D] 16 ¹/₃ days