Vaidev and Sam had $719. Vaidev spent
25 of his money on a dishwasher. Sam spent
13 of his money on a computer. The dishwasher cost $138 more than the computer. How much money did Vaidev have at first?
| |
Vaidev |
Sam |
Total |
Before |
5 u |
+ 345 |
3x2 =
6 u |
719 |
Change |
- 2 u |
- 138 |
- 1x2 =
- 2 u |
|
Comparing the dishwasher
and the computer |
138 more |
|
|
After |
3 u |
+ 207 |
2x2 =
4 u |
|
138 ÷ 2 = 69
3 x 69 = 207
5 x 69 = 345
Total amount that Vaidev and Sam had at first
= 5 u + 345 + 6 u
= 11 u + 345
11 u + 345 = 719
11 u = 719 - 345
11 u = 374
1 u = 374 ÷ 11 = 34
Amount that Vaidev had at first
= 5 u + 345
= 5 x 34 + 345
= 170 + 345
= $515
Answer(s): $515
