After using
25 of her chicken powder, Mrs Kong bought another 24 kg of chicken powder. As a result, Mrs Kong now has
115 as much chicken powder as what she had at first. How many kilograms of chicken powder did Mrs Kong have at first?
| |
Chicken Powder |
Total |
| Before |
5 u |
5 u |
| Change 1 |
- 1 u |
|
| After 1 |
3 u |
|
| Change 2 |
+ 24 |
|
| After 2 |
3 u + 24 |
11 u |
Fraction of chicken powder left after using
25 of it
= 1 -
25 =
35 Amount of chicken powder left after using some = 3 u
Amount of chicken powder after buying 24 kg of chicken powder = 3 u + 24
3 u + 24 = 11 u
11 u - 3 u = 24
8 u = 24
1 u = 24 ÷ 8 = 3
Amount of chicken powder that Mrs Kong had at first
= 5 u
= 5 x 3
= 15 kg
Answer(s): 15 kg
