Billy and Albert had $370 altogether. After Billy spent
16 of his money and Albert spent
45 of his money, Billy was left with twice as much money as Albert. How much money did Albert have at first?
| |
Billy |
Albert |
Total |
| Before |
6x2 =
12 u |
5x5 =
25 u |
$370 |
| Change |
- 1x2 =
- 2 u |
- 4x5 =
- 20 u |
|
| After |
5x2 =
10 u |
1x5 =
5 u |
|
Comparing Billy
and Albert in the end |
2x5 =
10 u |
1x5 =
5 u |
|
The amount that Billy had in the end is repeated. Make the amount that Billy had in the end the same. LCM of 5 and 2 is 10.
Total amount that Billy and Albert had at first
= 12 u + 25 u
= 37 u
37 u = 370
1 u = 370 ÷ 37 = 10
Amount that Albert had at first
= 25 u
= 25 x 10
= $250
Answer(s): $250
