On Wednesday, there were 25 more adults than children at the trampoline park. On Thursday, the number of adults decreased by 80% and the number of children decreased by 60%. There were 17 people on Thursday. How many adults were there on Thursday?
| |
Adults |
Children |
Total |
Comparing adults
and children at first |
25 more |
|
|
| Before |
5 u |
+ 25 |
5 u |
|
| Change |
- 4 u |
- 20 |
- 3 u |
|
| After |
1 u |
+ 5 |
2 u |
17 |
80% =
80100 =
45 80% x 25 =
45 x 25 = 20
25 - 20 = 5
60% =
60100 =
35 Total number of people on Thursday
= 1 u + 5 + 2 u
= 3 u + 5
3 u + 5 = 17
3 u = 17 - 5
3 u = 12
1 u = 12 ÷ 3 = 4
Number of adults on Thursday
= 1 u + 5
= 1 x 4 + 5
= 4 + 5
= 9
Answer(s): 9
