There was an equal number of boys and girls at the canteen. After
57 of the boys and 54 girls left the canteen, there were 14 more boys than girls at the canteen. How many children were there at the canteen at first?
|
Boys |
Girls |
Before |
7 u |
7 u |
Change |
- 5 u |
- 54 |
After |
2 u |
7 u - 54 |
Number of boys in the end
= 7 u - 5 u
= 2 u
If another 14 girls entered the canteen, the number of boys and girls would be the same.
7 u - 54 + 14 = 2 u
7 u - 40 = 2 u
7 u - 2 u = 40
5 u = 40
1 u = 40 ÷ 5 = 8
Number of children in the canteen at first
= 14 u
= 14 x 8
= 112
Answer(s): 112