On Saturday, there were 40 more adults than children at the trampoline park. On Sunday, the number of adults increased by 55% and the number of children decreased by 85%. There were 436 people on Sunday. How many children were there on Saturday?
|
Adults |
Children |
Total |
Comparing adults and children at first |
40 more |
|
|
Before |
20 u |
+ 40 |
20 u |
|
Change |
+ 11 u |
+ 22 |
- 17 u |
|
After |
31 u |
+ 62 |
3 u |
436 |
55% =
55100 =
1120 55% x 40 =
1120 x 40 = 22
40 + 22 = 62
85% =
85100 =
1720 Total number of people on Sunday
= 31 u + 62 + 3 u
= 34 u + 62
34 u + 62 = 436
34 u = 436 - 62
34 u = 374
1 u = 374 ÷ 34 = 11
Number of children on Saturday
= 20 u
= 20 x 11
= 220
Answer(s): 220