20% of Fabian's savings was $38 more than 40% of Zane's savings. After Fabian spent
12 of his savings and Zane spent 40% of his savings, Fabian had $127 more than Zane. How much was Fabian's saving at first?
|
Zane |
Fabian |
Before |
5 u |
10 u + 190 |
Change |
- 2 u |
- 5 u - 95 |
After |
3 u |
5 u + 95 |
Comparing Zane and Fabian in the end |
|
127 more |
20% =
20100 =
15 40% =
40100 =
25 15 Fabian =
25 Zane + 38
Make the numerators the same. LCM of 1 and 2 is 2.
1x25x2 Fabian =
2x15x1 Zane + 38
210 Fabian =
25 Zane + 38
Simplify the fractions.
110 Fabian =
15 Zane + 19
Let
15 Zane be
1 u.
Zane's savings at first = 5 u
110 Fabian =
15 Zane + 19
Let
110 Fabian be
1 u + 19.
Fabian's savings at first
= 10 x (1 u + 19)
= 10 u + 190
Savings that Zane spent
= 40% x 5 u
=
40100 x 5 u
= 2 u
Savings that Fabian spent
=
12 x (10 u + 190)
= 5 u + 95
Fabian had $127 more than Zane in the end. If another $127 was given to Zane, the amount that each had in the end would be the same.
5 u + 95 = 3 u + 127
5 u - 3 u = 127 - 95
2 u = 32
1 u = 32 ÷ 2 = 16
Savings that Fabian had at first
= 10 u + 190
= 10 x 16 + 190
= 160 + 190
= $350
Answer(s): $350