In what ratio must a grocer mix two varieties of pulses costing Rs. 15 and Rs. 20 per kg respectively so as to get a mixture worth Rs. 16.50 kg?

A. 3 : 7

B. 5 : 7

C. 7 : 3

D. 7 : 5

Answer: Option C

Solution(By Examveda Team)

By the rule of alligation, we have:

∴ Required rate = 3.50 : 1.50 = 7 : 3