After using
47 of her chilli powder, Mrs Chong bought another 16 kg of chilli powder. As a result, Mrs Chong now has
117 as much chilli powder as what she had at first. How many kilograms of chilli powder did Mrs Chong have at first?
| |
Chilli Powder |
Total |
| Before |
7 u |
7 u |
| Change 1 |
- 1 u |
|
| After 1 |
3 u |
|
| Change 2 |
+ 16 |
|
| After 2 |
3 u + 16 |
11 u |
Fraction of chilli powder left after using
47 of it
= 1 -
47 =
37 Amount of chilli powder left after using some = 3 u
Amount of chilli powder after buying 16 kg of chilli powder = 3 u + 16
3 u + 16 = 11 u
11 u - 3 u = 16
8 u = 16
1 u = 16 ÷ 8 = 2
Amount of chilli powder that Mrs Chong had at first
= 7 u
= 7 x 2
= 14 kg
Answer(s): 14 kg
