Oscar and Mark earned the same amount each month. Oscar saved
23 of his pay and Mark saved
37 of his pay. Oscar saved $160 more than Mark in a month. How much did Mark save in a month?
|
Oscar |
Mark |
Before |
3x7 = 21 u |
7x3 = 21 u |
Change |
- 2x7 = - 14 u |
- 3x3 = - 9 u |
After |
1x7 = 7 u |
4x3 = 12 u |
The amount that Oscar and Mark each earned in a month is the same. Make the amount the same. LCM of 3 and 7 is 21.
Amount that Oscar saved more than Mark
= 14 u - 9 u
= 5 u
5 u = 160
1 u = 160 ÷ 5 = 160
Amount that Mark saved in a month
= 9 u
= 9 x 160
= $1440
Answer(s): $1440