1.

20 kg of a mixture of wheat and husk contains 5% husk. How many kg more of husk must be added to make the husk content 20% in the new mixture?1). 2.752). 3.753). 4.754). 5.75

Answer»

GIVEN, Husk in 20 KG of mixture = 5% of 20 = 1 kg

Let x kg husk is been ADDED

According to the question,

⇒ 1 + x = 20% of (20 + x)

⇒ 1 + x = (1/5) × (20 + x)

⇒ 5 + 5x = 20 + x

⇒ 4x = 15

⇒ x = 15/4 = 3.75

∴ 3.75 kg of husk has been added


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