After using
311 of her chilli powder, Mrs Chew bought another 12 kg of chilli powder. As a result, Mrs Chew now has
1211 as much chilli powder as what she had at first. How many kilograms of chilli powder did Mrs Chew have at first?
| |
Chilli Powder |
Total |
| Before |
11 u |
11 u |
| Change 1 |
- 1 u |
|
| After 1 |
8 u |
|
| Change 2 |
+ 12 |
|
| After 2 |
8 u + 12 |
12 u |
Fraction of chilli powder left after using
311 of it
= 1 -
311 =
811 Amount of chilli powder left after using some = 8 u
Amount of chilli powder after buying 12 kg of chilli powder = 8 u + 12
8 u + 12 = 12 u
12 u - 8 u = 12
4 u = 12
1 u = 12 ÷ 4 = 3
Amount of chilli powder that Mrs Chew had at first
= 11 u
= 11 x 3
= 33 kg
Answer(s): 33 kg
