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Mayank can do 50% more work than Shishu in the same time. Shishu alone can do a piece of work in 30 hours. Shishu starts working and he had already worked for 12 hours when Mayank joins him. How many hours should Shishu and Mayank work together to complete the remaining work? A)6 B)12 C)7.2 D)9.6

A can do 50% more work than B in the same time. B alone can do a piece of work in 30 hours. B starts working and had already worked for 12 hours when A joins him. How many hours should B and A work together to complete the remaining work ?

Thirty men can dig a well in 10 days on working 8 hours a day. They started the work but after 2 days, 10 men left. How many hours a day should the remaining men work to complete it on time?

Twenty five men can make a certain number of chairs in 80 working hours. They work for 10 hours. How many more men should now be employed so as to complete the work in another 50 working hours?

What is a disease? How many typesof diseases have you studied? Give examples.

What is disease? How many types of diseases have you studied? Give examples.