After using
58 of her rice flour, Mrs Kok bought another 14 kg of rice flour. As a result, Mrs Kok now has
108 as much rice flour as what she had at first. How many kilograms of rice flour did Mrs Kok have at first?
| |
Rice Flour |
Total |
| Before |
8 u |
8 u |
| Change 1 |
- 1 u |
|
| After 1 |
3 u |
|
| Change 2 |
+ 14 |
|
| After 2 |
3 u + 14 |
10 u |
Fraction of rice flour left after using
58 of it
= 1 -
58 =
38 Amount of rice flour left after using some = 3 u
Amount of rice flour after buying 14 kg of rice flour = 3 u + 14
3 u + 14 = 10 u
10 u - 3 u = 14
7 u = 14
1 u = 14 ÷ 7 = 2
Amount of rice flour that Mrs Kok had at first
= 8 u
= 8 x 2
= 16 kg
Answer(s): 16 kg
