There are 20 balls some of them are green and the others are yellow The average cost of all balls is...........

Quantitative Aptitude ( CCS) Average

There are, 20 balls; some of them are green and the others are yellow. The average cost of all balls is Rs. 38, average cost of green balls Rs. 35 and that of yellow balls is Rs. 40, the number of yellow balls is:

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Explanation:

Solution:
green ball price …………….yellow ball price
…..35 ……………………………………..40
. 38
2 3
Ratio 2:3
Then 5 20(total ball)
3 ? ==> 12 balls.

By: Pranav Gupta

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There are 20 balls some of them are green and the others are yellow The average cost of all balls is...........

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