Shop S had 69 kg of bread flour and Shop T had 141 kg of bread flour. After both shops sold an equal amount of bread flour, Shop S had
37 as much bread flour as Shop T. How much bread flour did both shops sell?
| |
Shop S |
Shop T |
Difference |
| Before |
69 |
141 |
72 |
| Change |
- ? |
- ? |
|
| After |
3 u |
7 u |
4 u |
The difference between the amount of bread flour at first and in the end remains unchanged.
Difference in the mass of bread flour in the end
= 7 u - 3 u
= 4 u
4 u = 72
1 u = 72 ÷ 4 = 18
Mass of bread flour in Shop S in the end
= 3 u
= 3 x 18
= 54 kg
Mass of bread flour that each shop sold
= 69 - 54
= 15 kg
Amount of bread flour that both shops sold
= 2 x 15
= 30 kg
Answer(s): 30 kg
