On Wednesday, there were 20 more adults than children at the trampoline park. On Thursday, the number of adults increased by 65% and the number of children increased by 85%. There were 173 people on Thursday. How many adults were there on Wednesday?
| |
Adults |
Children |
Total |
Comparing adults
and children at first |
20 more |
|
|
| Before |
20 u |
+ 20 |
20 u |
|
| Change |
+ 13 u |
+ 13 |
+ 17 u |
|
| After |
33 u |
+ 33 |
37 u |
173 |
65% =
65100 =
1320 65% x 20 =
1320 x 20 = 13
20 + 13 = 33
85% =
85100 =
1720 Total number of people on Thursday
= 33 u + 33 + 37 u
= 70 u + 33
70 u + 33 = 173
70 u = 173 - 33
70 u = 140
1 u = 140 ÷ 70 = 2
Number of adults on Wednesday
= 20 u + 20
= 20 x 2 + 20
= 40 + 20
= 60
Answer(s): 60
