After using
19 of her flour, Mrs Hun bought another 12 kg of flour. As a result, Mrs Hun now has
119 as much flour as what she had at first. How many kilograms of flour did Mrs Hun have at first?
| |
Flour |
Total |
| Before |
9 u |
9 u |
| Change 1 |
- 1 u |
|
| After 1 |
8 u |
|
| Change 2 |
+ 12 |
|
| After 2 |
8 u + 12 |
11 u |
Fraction of flour left after using
19 of it
= 1 -
19 =
89 Amount of flour left after using some = 8 u
Amount of flour after buying 12 kg of flour = 8 u + 12
8 u + 12 = 11 u
11 u - 8 u = 12
3 u = 12
1 u = 12 ÷ 3 = 4
Amount of flour that Mrs Hun had at first
= 9 u
= 9 x 4
= 36 kg
Answer(s): 36 kg
