Percentage Practice Test 2 with solutions

Question : 30 of 40

Marks: +1, -0

The wheat sold by a grocer contained 10% low quality wheat. What quantity of good quality wheat should be added to 150 kgs of wheat so that the percentage of low quality wheat becomes 5%?

50 kgs
85 kgs
135 kgs
150 kgs

Validate

Solution:

Let x kg of good wheat be added; then

10/100×150=5/100(150+x)

⇒150+x=300

∴x=150\kg

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