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Quantitative Aptitude (RRB NTPC)

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The average of a batsman in 19th innings is 49. He wants to make it 50 in his last innings. So how much score he has to make to make it 50?

Explanation:

Solution:
basic method –
19*49= X
20*50=Y
Y-X =Ans
Shortcut:
We have to make 49 to 50. means +1, This 1 will get added to each 20 innings. So 49 + 20 = 69

By: Pranav Gupta

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