After using
35 of her curry powder, Mrs Tang bought another 16 kg of curry powder. As a result, Mrs Tang now has
105 as much curry powder as what she had at first. How many kilograms of curry powder did Mrs Tang have at first?
| |
Curry Powder |
Total |
| Before |
5 u |
5 u |
| Change 1 |
- 1 u |
|
| After 1 |
2 u |
|
| Change 2 |
+ 16 |
|
| After 2 |
2 u + 16 |
10 u |
Fraction of curry powder left after using
35 of it
= 1 -
35 =
25 Amount of curry powder left after using some = 2 u
Amount of curry powder after buying 16 kg of curry powder = 2 u + 16
2 u + 16 = 10 u
10 u - 2 u = 16
8 u = 16
1 u = 16 ÷ 8 = 2
Amount of curry powder that Mrs Tang had at first
= 5 u
= 5 x 2
= 10 kg
Answer(s): 10 kg
