Two varieties of salt, T and S, costing Rs. 25 and Rs. 35 per kg respectively are mixed in the ratio of 4 ∶ 6. The mixed variety is sold at Rs. 37 per kg. What is the approximate profit percentage?

Show answer & explanation

Answer: (A) 20%

Explanation

Cost per kg of the mixture = (4 × 25 + 6 × 35)/10 = Rs 31. Profit = 6/31 × 100 ≈ 19.4%, about 20%.