On Thursday, there were 35 more children than adults at the trampoline park. On Friday, the number of children increased by 80% and the number of adults increased by 60%. There were 199 people on Friday. How many children were there on Thursday?
| |
Children |
Adults |
Total |
Comparing children
and adults at first |
35 more |
|
|
| Before |
5 u |
+ 35 |
5 u |
|
| Change |
+ 4 u |
+ 28 |
+ 3 u |
|
| After |
9 u |
+ 63 |
8 u |
199 |
80% =
80100 =
45 80% x 35 =
45 x 35 = 28
35 + 28 = 63
60% =
60100 =
35 Total number of people on Friday
= 9 u + 63 + 8 u
= 17 u + 63
17 u + 63 = 199
17 u = 199 - 63
17 u = 136
1 u = 136 ÷ 17 = 8
Number of children on Thursday
= 5 u + 35
= 5 x 8 + 35
= 40 + 35
= 75
Answer(s): 75
