After using
38 of her sugar, Mrs Ma bought another 24 kg of sugar. As a result, Mrs Ma now has
98 as much sugar as what she had at first. How many kilograms of sugar did Mrs Ma have at first?
|
Sugar |
Total |
Before |
8 u |
8 u |
Change 1 |
- 1 u |
|
After 1 |
5 u |
|
Change 2 |
+ 24 |
|
After 2 |
5 u + 24 |
9 u |
Fraction of sugar left after using
38 of it
= 1 -
38 =
58 Amount of sugar left after using some = 5 u
Amount of sugar after buying 24 kg of sugar = 5 u + 24
5 u + 24 = 9 u
9 u - 5 u = 24
4 u = 24
1 u = 24 ÷ 4 = 6
Amount of sugar that Mrs Ma had at first
= 8 u
= 8 x 6
= 48 kg
Answer(s): 48 kg