IBM Company Numerical Ability Ratio and Proportion

5 monkeys eat 5 bananas in 5 minutes. Then how many monkeys can eat 20 bananas in 20 minutes.

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IBM Other Question

2 pipes A and B can fill a tank in 30minutes and 20 minutes respectively. B filled ¾ of the tank. Then for the rest both A and B filled the tank. How much time it took to fill the entire tank. A does a work in 20 days. A did for 28 days. Then b came. They together take 76 days to complete the 7 job. Find howmany days B complete a work.