After using
38 of her pepper, Mrs Hun bought another 30 kg of pepper. As a result, Mrs Hun now has
108 as much pepper as what she had at first. How many kilograms of pepper did Mrs Hun have at first?
|
Pepper |
Total |
Before |
8 u |
8 u |
Change 1 |
- 1 u |
|
After 1 |
5 u |
|
Change 2 |
+ 30 |
|
After 2 |
5 u + 30 |
10 u |
Fraction of pepper left after using
38 of it
= 1 -
38 =
58 Amount of pepper left after using some = 5 u
Amount of pepper after buying 30 kg of pepper = 5 u + 30
5 u + 30 = 10 u
10 u - 5 u = 30
5 u = 30
1 u = 30 ÷ 5 = 6
Amount of pepper that Mrs Hun had at first
= 8 u
= 8 x 6
= 48 kg
Answer(s): 48 kg