Esther had 45 less chocolate bars than Shiyun. Shiyun used
34 of her chocolate bars and Esther used
23 of her chocolate bars. In the end, Shiyun had 2 times as much as Esther. Find the number of chocolate bars that Shiyun had at first.
| |
Shiyun |
Esther |
Comparing Shiyun
and Parry at first |
|
45 less |
| Before |
4x2 =
8 u |
3 u |
| Change |
- 3x2 =
- 6 u |
- 2 u |
| After |
1x2 =
2 u |
1 u |
Comparing Shiyun
and Parry in the end |
2 u |
1 u |
The number of chocolate bars that Shiyun had in the end is repeated. Make the number of chocolate bars that Shiyun had in the end the same. LCM of 1 and 2 is 2.
Number of chocolate bars that Esther had less than Shiyun
= 8 u - 3 u
= 5 u
5 u = 45
1 u = 45 ÷ 5 = 9
Number of chocolate bars that Shiyun had at first
= 8 u
= 8 x 9
= 72
Answer(s): 72
