Billy and Xavier earned the same amount each month. Billy saved
23 of his pay and Xavier saved
37 of his pay. Billy saved $70 more than Xavier in a month. How much did Xavier save in a month?
|
Billy |
Xavier |
Before |
3x7 = 21 u |
7x3 = 21 u |
Change |
- 2x7 = - 14 u |
- 3x3 = - 9 u |
After |
1x7 = 7 u |
4x3 = 12 u |
The amount that Billy and Xavier each earned in a month is the same. Make the amount the same. LCM of 3 and 7 is 21.
Amount that Billy saved more than Xavier
= 14 u - 9 u
= 5 u
5 u = 70
1 u = 70 ÷ 5 = 70
Amount that Xavier saved in a month
= 9 u
= 9 x 70
= $630
Answer(s): $630