After using
311 of her curry powder, Mrs Loh bought another 20 kg of curry powder. As a result, Mrs Loh now has
1211 as much curry powder as what she had at first. How many kilograms of curry powder did Mrs Loh have at first?
| |
Curry Powder |
Total |
| Before |
11 u |
11 u |
| Change 1 |
- 1 u |
|
| After 1 |
8 u |
|
| Change 2 |
+ 20 |
|
| After 2 |
8 u + 20 |
12 u |
Fraction of curry powder left after using
311 of it
= 1 -
311 =
811 Amount of curry powder left after using some = 8 u
Amount of curry powder after buying 20 kg of curry powder = 8 u + 20
8 u + 20 = 12 u
12 u - 8 u = 20
4 u = 20
1 u = 20 ÷ 4 = 5
Amount of curry powder that Mrs Loh had at first
= 11 u
= 11 x 5
= 55 kg
Answer(s): 55 kg
