Zane and Ahmad had $799 altogether. After Zane spent
15 of his money and Ahmad spent
78 of his money, Zane was left with thrice as much money as Ahmad. How much money did Ahmad have at first?
| |
Zane |
Ahmad |
Total |
| Before |
5x3 =
15 u |
8x4 =
32 u |
$799 |
| Change |
- 1x3 =
- 3 u |
- 7x4 =
- 28 u |
|
| After |
4x3 =
12 u |
1x4 =
4 u |
|
Comparing Zane
and Ahmad in the end |
3x4 =
12 u |
1x4 =
4 u |
|
The amount that Zane had in the end is repeated. Make the amount that Zane had in the end the same. LCM of 4 and 3 is 12.
Total amount that Zane and Ahmad had at first
= 15 u + 32 u
= 47 u
47 u = 799
1 u = 799 ÷ 47 = 17
Amount that Ahmad had at first
= 32 u
= 32 x 17
= $544
Answer(s): $544
