Question

What amount of Kale at Rs. 5 a kg needs to be added to 20kg of coffee sold at
Rs. 12 per kg, so that the mixture can be sold at Rs. 7.50 per kg?​

Answer 1

Answer:

90

Step-by-step explanation:

let x be the qty to be found so we get equation as

(20*12+5x) / ( x+20) = 7.50

solve this we get x = 90