On Saturday, there were 40 more adults than children at the trampoline park. On Sunday, the number of adults increased by 60% and the number of children decreased by 80%. There were 118 people on Sunday. How many children were there on Saturday?
| |
Adults |
Children |
Total |
Comparing adults
and children at first |
40 more |
|
|
| Before |
5 u |
+ 40 |
5 u |
|
| Change |
+ 3 u |
+ 24 |
- 4 u |
|
| After |
8 u |
+ 64 |
1 u |
118 |
60% =
60100 =
35 60% x 40 =
35 x 40 = 24
40 + 24 = 64
80% =
80100 =
45 Total number of people on Sunday
= 8 u + 64 + 1 u
= 9 u + 64
9 u + 64 = 118
9 u = 118 - 64
9 u = 54
1 u = 54 ÷ 9 = 6
Number of children on Saturday
= 5 u
= 5 x 6
= 30
Answer(s): 30
