After using
35 of her bread flour, Mrs Long bought another 16 kg of bread flour. As a result, Mrs Long now has
65 as much bread flour as what she had at first. How many kilograms of bread flour did Mrs Long have at first?
| |
Bread Flour |
Total |
| Before |
5 u |
5 u |
| Change 1 |
- 1 u |
|
| After 1 |
2 u |
|
| Change 2 |
+ 16 |
|
| After 2 |
2 u + 16 |
6 u |
Fraction of bread flour left after using
35 of it
= 1 -
35 =
25 Amount of bread flour left after using some = 2 u
Amount of bread flour after buying 16 kg of bread flour = 2 u + 16
2 u + 16 = 6 u
6 u - 2 u = 16
4 u = 16
1 u = 16 ÷ 4 = 4
Amount of bread flour that Mrs Long had at first
= 5 u
= 5 x 4
= 20 kg
Answer(s): 20 kg
