After using
34 of her pepper, Mrs Cheong bought another 24 kg of pepper. As a result, Mrs Cheong now has
74 as much pepper as what she had at first. How many kilograms of pepper did Mrs Cheong have at first?
| |
Pepper |
Total |
| Before |
4 u |
4 u |
| Change 1 |
- 1 u |
|
| After 1 |
1 u |
|
| Change 2 |
+ 24 |
|
| After 2 |
1 u + 24 |
7 u |
Fraction of pepper left after using
34 of it
= 1 -
34 =
14 Amount of pepper left after using some = 1 u
Amount of pepper after buying 24 kg of pepper = 1 u + 24
1 u + 24 = 7 u
7 u - 1 u = 24
6 u = 24
1 u = 24 ÷ 6 = 4
Amount of pepper that Mrs Cheong had at first
= 4 u
= 4 x 4
= 16 kg
Answer(s): 16 kg
