After using
511 of her rice flour, Mrs Chan bought another 24 kg of rice flour. As a result, Mrs Chan now has
1211 as much rice flour as what she had at first. How many kilograms of rice flour did Mrs Chan have at first?
| |
Rice Flour |
Total |
| Before |
11 u |
11 u |
| Change 1 |
- 1 u |
|
| After 1 |
6 u |
|
| Change 2 |
+ 24 |
|
| After 2 |
6 u + 24 |
12 u |
Fraction of rice flour left after using
511 of it
= 1 -
511 =
611 Amount of rice flour left after using some = 6 u
Amount of rice flour after buying 24 kg of rice flour = 6 u + 24
6 u + 24 = 12 u
12 u - 6 u = 24
6 u = 24
1 u = 24 ÷ 6 = 4
Amount of rice flour that Mrs Chan had at first
= 11 u
= 11 x 4
= 44 kg
Answer(s): 44 kg
