After using
34 of her rice flour, Mrs Yap bought another 16 kg of rice flour. As a result, Mrs Yap now has
94 as much rice flour as what she had at first. How many kilograms of rice flour did Mrs Yap have at first?
| |
Rice Flour |
Total |
| Before |
4 u |
4 u |
| Change 1 |
- 1 u |
|
| After 1 |
1 u |
|
| Change 2 |
+ 16 |
|
| After 2 |
1 u + 16 |
9 u |
Fraction of rice flour left after using
34 of it
= 1 -
34 =
14 Amount of rice flour left after using some = 1 u
Amount of rice flour after buying 16 kg of rice flour = 1 u + 16
1 u + 16 = 9 u
9 u - 1 u = 16
8 u = 16
1 u = 16 ÷ 8 = 2
Amount of rice flour that Mrs Yap had at first
= 4 u
= 4 x 2
= 8 kg
Answer(s): 8 kg
