Shop C had 59 kg of flour and Shop D had 135 kg of flour. After both shops sold an equal amount of flour, Shop C had
37 as much flour as Shop D. How much flour did both shops sell?
| |
Shop C |
Shop D |
Difference |
| Before |
59 |
135 |
76 |
| Change |
- ? |
- ? |
|
| After |
3 u |
7 u |
4 u |
The difference between the amount of flour at first and in the end remains unchanged.
Difference in the mass of flour in the end
= 7 u - 3 u
= 4 u
4 u = 76
1 u = 76 ÷ 4 = 19
Mass of flour in Shop C in the end
= 3 u
= 3 x 19
= 57 kg
Mass of flour that each shop sold
= 59 - 57
= 2 kg
Amount of flour that both shops sold
= 2 x 2
= 4 kg
Answer(s): 4 kg
