After using
18 of her chilli powder, Mrs Ang bought another 22 kg of chilli powder. As a result, Mrs Ang now has
98 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 |
8 u |
8 u |
Change 1 |
- 1 u |
|
After 1 |
7 u |
|
Change 2 |
+ 22 |
|
After 2 |
7 u + 22 |
9 u |
Fraction of chilli powder left after using
18 of it
= 1 -
18 =
78 Amount of chilli powder left after using some = 7 u
Amount of chilli powder after buying 22 kg of chilli powder = 7 u + 22
7 u + 22 = 9 u
9 u - 7 u = 22
2 u = 22
1 u = 22 ÷ 2 = 11
Amount of chilli powder that Mrs Ang had at first
= 8 u
= 8 x 11
= 88 kg
Answer(s): 88 kg