On Tuesday, there were 40 more adults than children at the trampoline park. On Wednesday, the number of adults decreased by 90% and the number of children decreased by 70%. There were 52 people on Wednesday. How many adults were there on Wednesday?
| |
Adults |
Children |
Total |
Comparing adults
and children at first |
40 more |
|
|
| Before |
10 u |
+ 40 |
10 u |
|
| Change |
- 9 u |
- 36 |
- 7 u |
|
| After |
1 u |
+ 4 |
3 u |
52 |
90% =
90100 =
910 90% x 40 =
910 x 40 = 36
40 - 36 = 4
70% =
70100 =
710 Total number of people on Wednesday
= 1 u + 4 + 3 u
= 4 u + 4
4 u + 4 = 52
4 u = 52 - 4
4 u = 48
1 u = 48 ÷ 4 = 12
Number of adults on Wednesday
= 1 u + 4
= 1 x 12 + 4
= 12 + 4
= 16
Answer(s): 16
