Harry and Mark earned the same amount each month. Harry saved
23 of his pay and Mark saved
47 of his pay. Harry saved $200 more than Mark in a month. How much did Mark save in a month?
|
Harry |
Mark |
Before |
3x7 = 21 u |
7x3 = 21 u |
Change |
- 2x7 = - 14 u |
- 4x3 = - 12 u |
After |
1x7 = 7 u |
3x3 = 9 u |
The amount that Harry and Mark each earned in a month is the same. Make the amount the same. LCM of 3 and 7 is 21.
Amount that Harry saved more than Mark
= 14 u - 12 u
= 2 u
2 u = 200
1 u = 200 ÷ 2 = 200
Amount that Mark saved in a month
= 12 u
= 12 x 200
= $2400
Answer(s): $2400