Two types of tea are mixed. The first type costs ₹18 per kg and the second type costs ₹20 per kg. In what ratio should these be mixed so that by selling the mixture at ₹21 per kg, a profit of 10% is gained?
Show answer & explanation
Correct answer: A
Explanation
Selling Price = ₹21 per kg
Profit = 10%
CP = 21 × 100/110
= ₹210/11
≈ ₹19.09 per kg
(20 − 19.09) : (19.09 − 18)
= 0.91 : 1.09
= 91 : 109
= 5 : 6 (approximately)
Mixture ratio = 5 : 6