Fiona and Mary had an equal number of lollipops. After Fiona bought another 18 lollipops and Mary bought another 4 lollipops, Fiona had thrice as many lollipops as Mary. Find the number of lollipops that each of them had at first.
| |
Fiona |
Mary |
| Before |
3 u - 18 |
1 u - 4 |
| Change |
+ 18 |
+ 4 |
| After |
3 u |
1 u |
The number of lollipops that Fiona and Mary had at first is the same.
3 u - 18 = 1 u - 4
3 u - 1 u = 18 - 4
2 u = 14
1 u = 14 ÷ 2 = 7
Number of lollipops that each had at first
= 7 - 4
= 3
Answer(s): 3
