Mixtures and Allegations Practice Test 1

Question : 9 of 40

Marks: +1, -0

Two varieties of superior and inferior quality juices are mixed in the ratio 3 : 7. If the price of superior quality juice is Rs 250 per litre while the price of the inferior quality juice is Rs 20 per litre, then the average price of the mixture (per litre) is:

Rs 125
Rs 89
Rs 143
Rs 98
None of these

Validate

Solution:

{x-20}/{250-x}=3/7

7(x - 20) = 3(250 - x)

7x - 140 = 750 - 3x
10x = 750 + 140
10x = 890
x = Rs 89

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