After using
16 of her chilli powder, Mrs Yang bought another 28 kg of chilli powder. As a result, Mrs Yang now has
126 as much chilli powder as what she had at first. How many kilograms of chilli powder did Mrs Yang have at first?
| |
Chilli Powder |
Total |
| Before |
6 u |
6 u |
| Change 1 |
- 1 u |
|
| After 1 |
5 u |
|
| Change 2 |
+ 28 |
|
| After 2 |
5 u + 28 |
12 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 28 kg of chilli powder = 5 u + 28
5 u + 28 = 12 u
12 u - 5 u = 28
7 u = 28
1 u = 28 ÷ 7 = 4
Amount of chilli powder that Mrs Yang had at first
= 6 u
= 6 x 4
= 24 kg
Answer(s): 24 kg
