At the safari park, there were
57 as many boys as girls. After 44 boys came and 10 girls left the safari park, there was an equal number of boys and girls who remained at the safari park. How many children were at the safari park in the end?
|
Boys |
Girls |
Before |
5 u |
7 u |
Change |
+ 44 |
- 10 |
After |
5 u + 44 |
7 u - 10 |
Number of children in the end is the same.
7 u - 10 = 5 u + 44
7 u - 5 u = 44 + 10
2 u = 54
1 u = 54 ÷ 2 = 27
Number of children in the end
= 2 x (5 u + 44)
= 10 u + 88
= 10 x 27 + 88
= 270 + 88
= 358
Answer(s): 358