After using
14 of her chilli powder, Mrs Loo bought another 12 kg of chilli powder. As a result, Mrs Loo now has
74 as much chilli powder as what she had at first. How many kilograms of chilli powder did Mrs Loo have at first?
|
Chilli Powder |
Total |
Before |
4 u |
4 u |
Change 1 |
- 1 u |
|
After 1 |
3 u |
|
Change 2 |
+ 12 |
|
After 2 |
3 u + 12 |
7 u |
Fraction of chilli powder left after using
14 of it
= 1 -
14 =
34 Amount of chilli powder left after using some = 3 u
Amount of chilli powder after buying 12 kg of chilli powder = 3 u + 12
3 u + 12 = 7 u
7 u - 3 u = 12
4 u = 12
1 u = 12 ÷ 4 = 3
Amount of chilli powder that Mrs Loo had at first
= 4 u
= 4 x 3
= 12 kg
Answer(s): 12 kg