If two kinds of resins costing ₹160 per kg and ₹210 per kg are mixed in the ratio of 2 : 3, then find the cost (in ₹) of the mixture per kg.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 190.
weighted average formula:
Cost = (160 × 2 + 210 × 3) ÷ (2 + 3)
= (320 + 630) ÷ 5 = 950 ÷ 5 = ₹190 per kg