During a class parade,
57 of the students were girls and the rest were boys. Halfway, 370 more boys joined in the parade and there were
49 as many girls as boys. Find the number of students at the class parade in the end.
| |
Girls |
Boys |
| Before |
5x4 =
20 u |
2x4 =
8 u |
| |
|
+ 370 |
| After |
4x5 =
20 u |
9x5 =
45 u |
The number of boys remains unchanged.
LCM of 4 and 5 = 20.
Number of more boys who joined in
= 45 u - 8 u
= 37 u
37 u = 370
1 u = 370 ÷ 37 = 10
Number of students in the end
= 20 u + 45 u
= 65 u
= 65 x 10
= 650
Answer(s): 650
