After using
37 of her bread flour, Mrs Chong bought another 16 kg of bread flour. As a result, Mrs Chong now has
127 as much bread flour as what she had at first. How many kilograms of bread flour did Mrs Chong have at first?
| |
Bread Flour |
Total |
| Before |
7 u |
7 u |
| Change 1 |
- 1 u |
|
| After 1 |
4 u |
|
| Change 2 |
+ 16 |
|
| After 2 |
4 u + 16 |
12 u |
Fraction of bread flour left after using
37 of it
= 1 -
37 =
47 Amount of bread flour left after using some = 4 u
Amount of bread flour after buying 16 kg of bread flour = 4 u + 16
4 u + 16 = 12 u
12 u - 4 u = 16
8 u = 16
1 u = 16 ÷ 8 = 2
Amount of bread flour that Mrs Chong had at first
= 7 u
= 7 x 2
= 14 kg
Answer(s): 14 kg
