19.Aarya bought 7 1 half kg of apples. Later she found that 1 fifth of them were rotten. Find the weight of rotten apples and that of good ones
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Total weight of apples=7½ kg
Therefore, weight of rotten apples = (⅕ of 7½) kg
=⅕×15/2
=3/2 kg were rotten
Leftover apples which are good= 15/2-3/2
=12/2 kg
=6 kg are good apples
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