Arjun mixed three different oils to form a mixture costing ₹25 per litre. The ratio of the three varieties of oil was 1 : 5 : 2. What is the cost (per litre in ₹) of the second variety if the cost per litre of the first and third varieties was ₹20 and ₹30, respectively?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 24.
Let the cost of second variety be x.
Given, 20 + 5x + 60 = 200
⇒ 5x = 200 - 80
⇒ 5x = 120
⇒ x = 24