Tammy had $297 more than Zara. Tammy spent
37 of her money and Zara spent
23 of her money. In the end, Tammy had 3 times as much as Zara. Find the amount of money Zara had at first.
| |
Tammy |
Zara |
Comparing Tammy
and Zara at first |
$297 more |
|
| Before |
7x3 =
21 u |
3x4 =
12 u |
| Change |
- 3x3 =
- 9 u |
- 2x4 =
- 8 u |
| After |
4x3 =
12 u |
1x4 =
4 u |
Comparing Tammy
and Zara 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 Tammy had more than Zara
= 21 u - 12 u
= 9 u
9 u = 297
1 u = 297 ÷ 9 = 33
Amount that Zara had at first
= 12 u
= 12 x 33
= $396
Answer(s): $396
