Multiple choice

A green liquid is mixed with a blue liquid in the proportion 4 : 5 and the mixture is sold at Rs. 20 per litre at a 20% profit. If the green liquid costs Rs. 4 more per litre than the blue liquid, what is the approximate cost of the green liquid per litre?

  1. Rs. 16.33

  2. Rs. 18.88

  3. Rs. 17.66

  4. Rs. 19.22
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Selling price = 20, profit = 20%, so Cost Price = 20 / 1.2 = 16.67. Let green liquid cost x, blue cost x-4. Mixture ratio 4:5. (4x + 5(x-4)) / 9 = 16.67. 9x - 20 = 150. 9x = 170, x = 18.88.

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