IBM Company Numerical Ability Ratio and Proportion

A&B fill 3 litres and 5 litres of oil in the car. C pays Rs. 8/- to A7B. How much will A get?

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IBM Other Question

in a grass field, If there are 40 cows, they could eat for 40 days. If there are 30 cows, they could eat for 60 days. Than if 20 cows, How much day they could eat? 3,17,29,113,241,?