During a class celebration,
58 of the students were girls and the rest were boys. Halfway, 312 more boys joined in the celebration and there were
37 as many girls as boys. Find the number of students at the class celebration in the end.
|
Girls |
Boys |
Before |
5x3 = 15 u |
3x3 = 9 u |
|
|
+ 312 |
After |
3x5 = 15 u |
7x5 = 35 u |
The number of boys remains unchanged.
LCM of 3 and 5 = 15.
Number of more boys who joined in
= 35 u - 9 u
= 26 u
26 u = 312
1 u = 312 ÷ 26 = 12
Number of students in the end
= 15 u + 35 u
= 50 u
= 50 x 12
= 600
Answer(s): 600