Yen had 135 more chocolate bars than Gwen. Yen used
45 of her chocolate bars and Gwen used
45 of her chocolate bars. In the end, Yen had 4 times as much as Gwen. Find the number of chocolate bars that Gwen had at first.
|
Yen |
Gwen |
Comparing Yen and Parry at first |
135 more |
|
Before |
5x4 = 20 u |
5 u |
Change |
- 4x4 = - 16 u |
- 4 u |
After |
1x4 = 4 u |
1 u |
Comparing Yen and Parry in the end |
4 u |
1 u |
The number of chocolate bars that Yen had in the end is repeated. Make the number of chocolate bars that Yen had in the end the same. LCM of 1 and 4 is 4.
Number of chocolate bars that Yen had more than Gwen
= 20 u - 5 u
= 15 u
15 u = 135
1 u = 135 ÷ 15 = 9
Number of chocolate bars that Gwen had at first
= 5 u
= 5 x 9
= 45
Answer(s): 45