After using
211 of her chilli powder, Mrs Koh bought another 27 kg of chilli powder. As a result, Mrs Koh now has
1211 as much chilli powder as what she had at first. How many kilograms of chilli powder did Mrs Koh have at first?
| |
Chilli Powder |
Total |
| Before |
11 u |
11 u |
| Change 1 |
- 1 u |
|
| After 1 |
9 u |
|
| Change 2 |
+ 27 |
|
| After 2 |
9 u + 27 |
12 u |
Fraction of chilli powder left after using
211 of it
= 1 -
211 =
911 Amount of chilli powder left after using some = 9 u
Amount of chilli powder after buying 27 kg of chilli powder = 9 u + 27
9 u + 27 = 12 u
12 u - 9 u = 27
3 u = 27
1 u = 27 ÷ 3 = 9
Amount of chilli powder that Mrs Koh had at first
= 11 u
= 11 x 9
= 99 kg
Answer(s): 99 kg
