There were
45 as many adults as children on a bus. At the first bus stop, 5 adults and 5 children alighted the bus. There were then
35 as many adults as children. How many adults were on the bus in the end?
| |
Adults |
Children |
Difference |
| Before |
4x2 =
8 u |
5x2 =
10 u |
1x2 =
2 u |
| Change |
- 5 |
- 5 |
|
| After |
3x1 =
3 u |
5x1 =
5 u |
2x1 =
2 u |
Since equal number of adults and children alighted the bus, the difference in the number of adults and children at first and in the end remains the same. LCM of 2 and 1 is 2.
Number of adults who alighted the bus
= 8 u - 3 u
= 5 u
5 u = 5
1 u = 5 ÷ 5 = 1
Number of adults in the end
= 3 u
= 3 x 1
= 3
Answer(s): 3
