Lynn had 91 less chocolate bars than Olivia. Olivia used
34 of her chocolate bars and Lynn used
23 of her chocolate bars. In the end, Olivia had 4 times as much as Lynn. Find the number of chocolate bars that Olivia had at first.
| |
Olivia |
Lynn |
Comparing Olivia
and Parry at first |
|
91 less |
| Before |
4x4 =
16 u |
3 u |
| Change |
- 3x4 =
- 12 u |
- 2 u |
| After |
1x4 =
4 u |
1 u |
Comparing Olivia
and Parry in the end |
4 u |
1 u |
The number of chocolate bars that Olivia had in the end is repeated. Make the number of chocolate bars that Olivia had in the end the same. LCM of 1 and 4 is 4.
Number of chocolate bars that Lynn had less than Olivia
= 16 u - 3 u
= 13 u
13 u = 91
1 u = 91 ÷ 13 = 7
Number of chocolate bars that Olivia had at first
= 16 u
= 16 x 7
= 112
Answer(s): 112
