Shop F had 78 kg of flour and Shop G had 130 kg of flour. After both shops sold an equal amount of flour, Shop F had
37 as much flour as Shop G. How much flour did both shops sell?
| |
Shop F |
Shop G |
Difference |
| Before |
78 |
130 |
52 |
| 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 = 52
1 u = 52 ÷ 4 = 13
Mass of flour in Shop F in the end
= 3 u
= 3 x 13
= 39 kg
Mass of flour that each shop sold
= 78 - 39
= 39 kg
Amount of flour that both shops sold
= 2 x 39
= 78 kg
Answer(s): 78 kg
