On Monday, there were 40 more adults than children at the trampoline park. On Tuesday, the number of adults increased by 85% and the number of children increased by 65%. There were 214 people on Tuesday. How many adults were there on Monday?
|
Adults |
Children |
Total |
Comparing adults and children at first |
40 more |
|
|
Before |
20 u |
+ 40 |
20 u |
|
Change |
+ 17 u |
+ 34 |
+ 13 u |
|
After |
37 u |
+ 74 |
33 u |
214 |
85% =
85100 =
1720 85% x 40 =
1720 x 40 = 34
40 + 34 = 74
65% =
65100 =
1320 Total number of people on Tuesday
= 37 u + 74 + 33 u
= 70 u + 74
70 u + 74 = 214
70 u = 214 - 74
70 u = 140
1 u = 140 ÷ 70 = 2
Number of adults on Monday
= 20 u + 40
= 20 x 2 + 40
= 40 + 40
= 80
Answer(s): 80