Ben and Simon had $541. Ben spent
25 of his money on a notebook. Simon spent
13 of his money on a refrigerator. The notebook cost $102 more than the refrigerator. How much money did Ben have at first?
| |
Ben |
Simon |
Total |
Before |
5 u |
+ 255 |
3x2 =
6 u |
541 |
Change |
- 2 u |
- 102 |
- 1x2 =
- 2 u |
|
Comparing the notebook
and the refrigerator |
102 more |
|
|
After |
3 u |
+ 153 |
2x2 =
4 u |
|
102 ÷ 2 = 51
3 x 51 = 153
5 x 51 = 255
Total amount that Ben and Simon had at first
= 5 u + 255 + 6 u
= 11 u + 255
11 u + 255 = 541
11 u = 541 - 255
11 u = 286
1 u = 286 ÷ 11 = 26
Amount that Ben had at first
= 5 u + 255
= 5 x 26 + 255
= 130 + 255
= $385
Answer(s): $385
