After using
34 of her flour, Mrs Cheong bought another 24 kg of flour. As a result, Mrs Cheong now has
94 as much flour as what she had at first. How many kilograms of flour did Mrs Cheong have at first?
| |
Flour |
Total |
| Before |
4 u |
4 u |
| Change 1 |
- 1 u |
|
| After 1 |
1 u |
|
| Change 2 |
+ 24 |
|
| After 2 |
1 u + 24 |
9 u |
Fraction of flour left after using
34 of it
= 1 -
34 =
14 Amount of flour left after using some = 1 u
Amount of flour after buying 24 kg of flour = 1 u + 24
1 u + 24 = 9 u
9 u - 1 u = 24
8 u = 24
1 u = 24 ÷ 8 = 3
Amount of flour that Mrs Cheong had at first
= 4 u
= 4 x 3
= 12 kg
Answer(s): 12 kg
