After using
17 of her chilli powder, Mrs Ang bought another 30 kg of chilli powder. As a result, Mrs Ang now has
117 as much chilli powder as what she had at first. How many kilograms of chilli powder did Mrs Ang have at first?
| |
Chilli Powder |
Total |
| Before |
7 u |
7 u |
| Change 1 |
- 1 u |
|
| After 1 |
6 u |
|
| Change 2 |
+ 30 |
|
| After 2 |
6 u + 30 |
11 u |
Fraction of chilli powder left after using
17 of it
= 1 -
17 =
67 Amount of chilli powder left after using some = 6 u
Amount of chilli powder after buying 30 kg of chilli powder = 6 u + 30
6 u + 30 = 11 u
11 u - 6 u = 30
5 u = 30
1 u = 30 ÷ 5 = 6
Amount of chilli powder that Mrs Ang had at first
= 7 u
= 7 x 6
= 42 kg
Answer(s): 42 kg
