Question

In what proportion must coffee at Rs. 625 per kgs be mixed with coffee at Rs. 750 per kg. in order to obtain the mixture costing Rs. 675 per kg.​

Answer 1

Answer:

2:2

Explanation:

mix both of the coffee (each of 2kg)

Answer 2

3 : 1

let the ratio be x : y ( coffee 625 : coffee 750) in (x+y) kg

then....

x(625) + y(750) = 675 (x+y)

x( 675 - 650) = y (750-675)

25x = 75y

hence....x/y = 75/25 = 3/1

therefore x : y = 3 : 1