Question

Rice costs=$x

potatoes cost=$(x-1)
total of 12 kg of rice and 17 kg of potatoes=$31.70
how much with 1 kg of rice cost

Answer 1

Explanation:

rice = x
potatoes= x-1
12(x) + 17 (x-1) =31.7
12x+17x-17=31.7
29x=48.7
x=1.68 $
x-1 = 0.68$
therefore , 1 kg of rice = 1.68$ and 1 kg of potates = 0.68 $