After using
16 of her chilli powder, Mrs Chau bought another 14 kg of chilli powder. As a result, Mrs Chau now has
76 as much chilli powder as what she had at first. How many kilograms of chilli powder did Mrs Chau have at first?
| |
Chilli Powder |
Total |
| Before |
6 u |
6 u |
| Change 1 |
- 1 u |
|
| After 1 |
5 u |
|
| Change 2 |
+ 14 |
|
| After 2 |
5 u + 14 |
7 u |
Fraction of chilli powder left after using
16 of it
= 1 -
16 =
56 Amount of chilli powder left after using some = 5 u
Amount of chilli powder after buying 14 kg of chilli powder = 5 u + 14
5 u + 14 = 7 u
7 u - 5 u = 14
2 u = 14
1 u = 14 ÷ 2 = 7
Amount of chilli powder that Mrs Chau had at first
= 6 u
= 6 x 7
= 42 kg
Answer(s): 42 kg
