After using
19 of her chicken powder, Mrs Tan bought another 14 kg of chicken powder. As a result, Mrs Tan now has
109 as much chicken powder as what she had at first. How many kilograms of chicken powder did Mrs Tan have at first?
| |
Chicken Powder |
Total |
| Before |
9 u |
9 u |
| Change 1 |
- 1 u |
|
| After 1 |
8 u |
|
| Change 2 |
+ 14 |
|
| After 2 |
8 u + 14 |
10 u |
Fraction of chicken powder left after using
19 of it
= 1 -
19 =
89 Amount of chicken powder left after using some = 8 u
Amount of chicken powder after buying 14 kg of chicken powder = 8 u + 14
8 u + 14 = 10 u
10 u - 8 u = 14
2 u = 14
1 u = 14 ÷ 2 = 7
Amount of chicken powder that Mrs Tan had at first
= 9 u
= 9 x 7
= 63 kg
Answer(s): 63 kg
