Xandra had 8 less chocolate bars than Olivia. Olivia used
34 of her chocolate bars and Xandra used
34 of her chocolate bars. In the end, Olivia had 2 times as much as Xandra. Find the number of chocolate bars that Olivia had at first.
| |
Olivia |
Xandra |
Comparing Olivia
and Parry at first |
|
8 less |
| Before |
4x2 =
8 u |
4 u |
| Change |
- 3x2 =
- 6 u |
- 3 u |
| After |
1x2 =
2 u |
1 u |
Comparing Olivia
and Parry in the end |
2 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 2 is 2.
Number of chocolate bars that Xandra had less than Olivia
= 8 u - 4 u
= 4 u
4 u = 8
1 u = 8 ÷ 4 = 2
Number of chocolate bars that Olivia had at first
= 8 u
= 8 x 2
= 16
Answer(s): 16
