Question

How much chocolate worth 40 rs per kg should be added to 120 kg of coffee?

Answer 1

Answer:

168 kg Chocolate to be added

Step-by-step explanation:

Complete Question is :

How much chocolate worth rs. 40 per kg should be added to 120 kg of coffee worth rs. 100 per kg such that the mixture is worth rs. 65 per kg

Let say  C kg chocolates to be added  

Cost of Chocolates = 40C  Rs

Coffer= 120 kg

Coffe price = 100 rs /kg

Coffee Cost = 120 * 100 = Rs 12000

Total Cost = 40C + 12000 Rs

Total Mixture = C + 120 kg

mixture is worth rs. 65 per kg

=> 65 (C + 120) = 40C + 12000

=> 65C + 65*120 = 40C + 12000

=> 65C - 40C = 120 *(100 - 65)

=> 25C = 120 * 35

=> C = 24 * 7

=> C = 168

168 kg Chocolate to be added