After using
56 of her sugar, Mrs Neo bought another 18 kg of sugar. As a result, Mrs Neo now has
76 as much sugar as what she had at first. How many kilograms of sugar did Mrs Neo have at first?
| |
Sugar |
Total |
| Before |
6 u |
6 u |
| Change 1 |
- 1 u |
|
| After 1 |
1 u |
|
| Change 2 |
+ 18 |
|
| After 2 |
1 u + 18 |
7 u |
Fraction of sugar left after using
56 of it
= 1 -
56 =
16 Amount of sugar left after using some = 1 u
Amount of sugar after buying 18 kg of sugar = 1 u + 18
1 u + 18 = 7 u
7 u - 1 u = 18
6 u = 18
1 u = 18 ÷ 6 = 3
Amount of sugar that Mrs Neo had at first
= 6 u
= 6 x 3
= 18 kg
Answer(s): 18 kg
