In what proportion must a grocer mix sugar at Rs.12 a kg and Rs.7 a kg so as to make a mixture worth Rs.8 a kg ?
Show answer & explanation
Correct answer: B
Explanation
The correct option is 2.
using Alligation
required proportion is 1 : 4
alternatively
12x +7y = 8x + 8y = 4x = y
hence 1 : 4