On Saturday, there were 20 more adults than children at the trampoline park. On Sunday, the number of adults increased by 55% and the number of children increased by 65%. There were 799 people on Sunday. How many adults were there on Saturday?
| |
Adults |
Children |
Total |
Comparing adults
and children at first |
20 more |
|
|
| Before |
20 u |
+ 20 |
20 u |
|
| Change |
+ 11 u |
+ 11 |
+ 13 u |
|
| After |
31 u |
+ 31 |
33 u |
799 |
55% =
55100 =
1120 55% x 20 =
1120 x 20 = 11
20 + 11 = 31
65% =
65100 =
1320 Total number of people on Sunday
= 31 u + 31 + 33 u
= 64 u + 31
64 u + 31 = 799
64 u = 799 - 31
64 u = 768
1 u = 768 ÷ 64 = 12
Number of adults on Saturday
= 20 u + 20
= 20 x 12 + 20
= 240 + 20
= 260
Answer(s): 260
