Percentage Practice Test 3 with solutions

Question : 18 of 40

Marks: +1, -0

In some quantity of ghee, 60% is pure ghee and 40% is vanaspati. If 10 kg of pure ghee is added, then the strength of Vanaspati ghee becomes 20%. The original quantity was

25 kg
20 kg
15 kg
10 kg

Validate

Solution:

Let original quantity was x kg, then

60/100×x+10=80/100(x+10)

⇒0.6x+10=0.8x+8

⇒x=10\kg

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