Jean had $165 less than Tammy. Tammy spent
37 of her money and Jean spent
34 of her money. In the end, Tammy had 3 times as much as Jean. Find the amount of money Tammy had at first.
| |
Tammy |
Jean |
Comparing Tammy
and Jean at first |
$165 more |
|
| Before |
7x3 =
21 u |
4x4 =
16 u |
| Change |
- 3x3 =
- 9 u |
- 3x4 =
- 12 u |
| After |
4x3 =
12 u |
1x4 =
4 u |
Comparing Tammy
and Jean in the end |
3x4 =
12 u |
1x4 =
4 u |
The amount that Tammy had in the end is repeated. Make the amount that Tammy had in the end the same. LCM of 3 and 4 is 12.
Amount that Jean had less than Tammy
= 21 u - 16 u
= 5 u
5 u = 165
1 u = 165 ÷ 5 = 33
Amount that Tammy had at first
= 21 u
= 21 x 33
= $693
Answer(s): $693
