On Saturday, there were 10 more children than adults at the trampoline park. On Sunday, the number of children decreased by 80% and the number of adults decreased by 60%. There were 8 people on Sunday. How many children were there on Sunday?
| |
Children |
Adults |
Total |
Comparing children
and adults at first |
10 more |
|
|
| Before |
5 u |
+ 10 |
5 u |
|
| Change |
- 4 u |
- 8 |
- 3 u |
|
| After |
1 u |
+ 2 |
2 u |
8 |
80% =
80100 =
45 80% x 10 =
45 x 10 = 8
10 - 8 = 2
60% =
60100 =
35 Total number of people on Sunday
= 1 u + 2 + 2 u
= 3 u + 2
3 u + 2 = 8
3 u = 8 - 2
3 u = 6
1 u = 6 ÷ 3 = 2
Number of children on Sunday
= 1 u + 2
= 1 x 2 + 2
= 2 + 2
= 4
Answer(s): 4
