Fiona had 80 less jelly beans than Lucy. Lucy used
45 of her jelly beans and Fiona used
12 of her jelly beans. In the end, Lucy had 2 times as much as Fiona. Find the number of jelly beans that Lucy had at first.
| |
Lucy |
Fiona |
Comparing Lucy
and Parry at first |
|
80 less |
| Before |
5x2 =
10 u |
2 u |
| Change |
- 4x2 =
- 8 u |
- 1 u |
| After |
1x2 =
2 u |
1 u |
Comparing Lucy
and Parry in the end |
2 u |
1 u |
The number of jelly beans that Lucy had in the end is repeated. Make the number of jelly beans that Lucy had in the end the same. LCM of 1 and 2 is 2.
Number of jelly beans that Fiona had less than Lucy
= 10 u - 2 u
= 8 u
8 u = 80
1 u = 80 ÷ 8 = 10
Number of jelly beans that Lucy had at first
= 10 u
= 10 x 10
= 100
Answer(s): 100
