On Monday, there were 20 more children than adults at the laser tag park. On Tuesday, the number of children decreased by 55% and the number of adults decreased by 85%. There were 33 people on Tuesday. How many children were there on Tuesday?
| |
Children |
Adults |
Total |
Comparing children
and adults at first |
20 more |
|
|
| Before |
20 u |
+ 20 |
20 u |
|
| Change |
- 11 u |
- 11 |
- 17 u |
|
| After |
9 u |
+ 9 |
3 u |
33 |
55% =
55100 =
1120 55% x 20 =
1120 x 20 = 11
20 - 11 = 9
85% =
85100 =
1720 Total number of people on Tuesday
= 9 u + 9 + 3 u
= 12 u + 9
12 u + 9 = 33
12 u = 33 - 9
12 u = 24
1 u = 24 ÷ 12 = 2
Number of children on Tuesday
= 9 u + 9
= 9 x 2 + 9
= 18 + 9
= 27
Answer(s): 27
