Julian and Riordan had $1400. Julian spent
49 of his money on a washing machine. Riordan spent
15 of his money on a portable air-conditioner. The washing machine cost $184 more than the portable air-conditioner. How much money had Julian left?
|
Julian |
Riordan |
Total |
Before |
9 u |
+ 414 |
5x4 = 20 u |
1400 |
Change |
- 4 u |
- 184 |
- 1x4 = - 4 u |
|
Comparing the washing machine and the portable air-conditioner |
184 more |
|
|
After |
5 u |
+ 230 |
4x4 = 16 u |
|
184 ÷ 4 = 46
5 x 46 = 230
9 x 46 = 414
Total amount that Julian and Riordan had at first
= 9 u + 414 + 20 u
= 29 u + 414
29 u + 414 = 1400
29 u = 1400 - 414
29 u = 986
1 u = 986 ÷ 29 = 34
Amount that Julian had left
= 5 u + 230
= 5 x 34 + 230
= 170 + 230
= $400
Answer(s): $400