Julie has 2 times as many biscuits as Joelle. The total number of Julie's and Joelle's biscuits is 4 times of Olivia's. Julie and Joelle have 27 biscuits more than Olivia's. How many less biscuits does Olivia have than Julie?
| Julie |
Joelle |
Olivia |
| 2x4 |
1x4 |
|
| 4x3 |
1x3 |
| 8 u |
4 u |
3 u |
The total number of biscuits that Julie and Joelle have is repeated. Make the total number of biscuits that Julie and Joelle have the same. LCM of 3 and 4 is 12.
Total number of biscuits that Julie and Joelle have
= 8 u + 4 u
= 12 u
Number of more biscuits that Julie and Joelle have than Olivia
= 12 u - 3 u
= 9 u
9 u = 27
1 u = 27 ÷ 9 = 3
Number of less biscuits that Olivia has than Julie
= 8 u - 3 u
= 5 u
= 5 x 3
= 15
Answer(s): 15
