CAT Questions

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Working together P, Q and R reap a field in 6 days. If P can do it alone in 10 days and Q in 24 days, in how many days will R alone be able to reap the field?

There are 90 coins, comprising of 5 and 10 paisa coins. The value of all the coins is Rs. 7. How many 5 paisa coins are there?

Find the LCM of 15, 25 and 29.

What is the compound interest on Rs. 48,000 for 2 years at 20% p.a., if interest is compounded annually?

A person who sells houses

The average marks obtained by Raghav in 12 tests is 24. Zubeida has maintained an average of 23 so far but has taken only 9 of the tests. If each test is out of 30, at least how much Zubeida score in any one of the remaining three tests to still have a chance to match Raghav's performance?

Assuming that the numbers in each of the following figures follow a similar pattern, select the option that can replace the ? in figure C?

Which of the following devices converts Chemical energy into Electrical energy?