After using
25 of her pepper, Mrs Yeo bought another 24 kg of pepper. As a result, Mrs Yeo now has
95 as much pepper as what she had at first. How many kilograms of pepper did Mrs Yeo have at first?
| |
Pepper |
Total |
| Before |
5 u |
5 u |
| Change 1 |
- 1 u |
|
| After 1 |
3 u |
|
| Change 2 |
+ 24 |
|
| After 2 |
3 u + 24 |
9 u |
Fraction of pepper left after using
25 of it
= 1 -
25 =
35 Amount of pepper left after using some = 3 u
Amount of pepper after buying 24 kg of pepper = 3 u + 24
3 u + 24 = 9 u
9 u - 3 u = 24
6 u = 24
1 u = 24 ÷ 6 = 4
Amount of pepper that Mrs Yeo had at first
= 5 u
= 5 x 4
= 20 kg
Answer(s): 20 kg
