This is a question relating to solving algebraic expression of two different blend. (3mks)

Question

Miya answer

11. Two grades of coffee one costing sh.42 per kilogram and the other costing sh.47 per kilogram are to be mixed in order to produce a blend worth sh.46 per kilogram in what proportion should they be mixed. (3mks)

Answer 1

To start lets agree that you need a larger percent of the more expensive coffee as the price of the blend is much closer to the price of the more expensive one. The difference in cost is .05

The less expensive coffee is .04 below and the more expensive is .01 above

Therefore the ratio should be 4:1

Lets see if this works 4 kg at .47 = 1.88 1 kg at .42 is .42

Average is (1.88 +.42) / 5 = 2.30/5 = .46