Get premium membership and access revision papers with marking schemes, video lessons and live classes.
A dealer has three grades of coffee X, Y and Z. Grade X costs sh 140 per kg. Grade Y costs sh 160 per kg and grade Z costs sh 256 per kg. (a) The dealer mixed grades X and Y in the ratio 5: 3 to make a brand of coffee which he sells at sh 180 per kg. Calculate the percentage profit he makes. (b) The dealer makes a new brand by mixing the three grades of coffee, in the ratios X:Y = 5: 3 and Y:Z