There were
79 as many adults as children on a bus. At the first bus stop, 1 adults and 1 children alighted the bus. There were then
34 as many adults as children. How many adults were on the bus in the end?
|
Adults |
Children |
Difference |
Before |
7x1 = 7 u |
9x1 = 9 u |
2x1 = 2 u |
Change |
- 1 |
- 1 |
|
After |
3x2 = 6 u |
4x2 = 8 u |
1x2 = 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 1 and 2 is 2.
Number of adults who alighted the bus
= 7 u - 6 u
= 1 u
1 u = 1
1 u = 1 ÷ 1 = 1
Number of adults in the end
= 6 u
= 6 x 1
= 6
Answer(s): 6