After using
16 of her bread flour, Mrs Chium bought another 24 kg of bread flour. As a result, Mrs Chium now has
76 as much bread flour as what she had at first. How many kilograms of bread flour did Mrs Chium have at first?
| |
Bread Flour |
Total |
| Before |
6 u |
6 u |
| Change 1 |
- 1 u |
|
| After 1 |
5 u |
|
| Change 2 |
+ 24 |
|
| After 2 |
5 u + 24 |
7 u |
Fraction of bread flour left after using
16 of it
= 1 -
16 =
56 Amount of bread flour left after using some = 5 u
Amount of bread flour after buying 24 kg of bread flour = 5 u + 24
5 u + 24 = 7 u
7 u - 5 u = 24
2 u = 24
1 u = 24 ÷ 2 = 12
Amount of bread flour that Mrs Chium had at first
= 6 u
= 6 x 12
= 72 kg
Answer(s): 72 kg
