On Wednesday, there were 40 more children than adults at the funfair. On Thursday, the number of children decreased by 65% and the number of adults decreased by 55%. There were 158 people on Thursday. How many children were there on Thursday?
| |
Children |
Adults |
Total |
Comparing children
and adults at first |
40 more |
|
|
| Before |
20 u |
+ 40 |
20 u |
|
| Change |
- 13 u |
- 26 |
- 11 u |
|
| After |
7 u |
+ 14 |
9 u |
158 |
65% =
65100 =
1320 65% x 40 =
1320 x 40 = 26
40 - 26 = 14
55% =
55100 =
1120 Total number of people on Thursday
= 7 u + 14 + 9 u
= 16 u + 14
16 u + 14 = 158
16 u = 158 - 14
16 u = 144
1 u = 144 ÷ 16 = 9
Number of children on Thursday
= 7 u + 14
= 7 x 9 + 14
= 63 + 14
= 77
Answer(s): 77
