During a class gathering,
910 of the students were girls and the rest were boys. Halfway, 377 more boys joined in the gathering and there were
310 as many girls as boys. Find the number of students at the class gathering in the end.
|
Girls |
Boys |
Before |
9x1 = 9 u |
1x1 = 1 u |
|
|
+ 377 |
After |
3x3 = 9 u |
10x3 = 30 u |
The number of boys remains unchanged.
LCM of 3 and 9 = 9.
Number of more boys who joined in
= 30 u - 1 u
= 29 u
29 u = 377
1 u = 377 ÷ 29 = 13
Number of students in the end
= 9 u + 30 u
= 39 u
= 39 x 13
= 507
Answer(s): 507