Selling price of 69.60 = 120%
? = 100%
= $\frac{100}{120}$ x 69.60 = sh 58
therefor cost of 1 kg of the mixture is:
Let buying price of
type A = x and type B = y
$\frac{3x + 70\times 2}{3 + 2}$ = 58
$\frac{3x + 140}{5}$ = 58
3x + 140 = 290
3x = 150
x = sh 50
Buying price of type A is sh 50 per kg
johnmulu answered the question on March 6, 2017 at 13:27
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