Answers

2016-03-11T15:41:32+05:30
Let x be the number added,
Therefore,

(10+X) / (18+X) = (22+X) / (38+X)380 + 48x + x² = 396 + 40x + x²⇒8x = 16⇒x = 2

Therefore, the number added, x = 2
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