During a class function,
710 of the students were girls and the rest were boys. Halfway, 235 more boys joined in the function and there were
38 as many girls as boys. Find the number of students at the class function in the end.
|
Girls |
Boys |
Before |
7x3 = 21 u |
3x3 = 9 u |
|
|
+ 235 |
After |
3x7 = 21 u |
8x7 = 56 u |
The number of boys remains unchanged.
LCM of 3 and 7 = 21.
Number of more boys who joined in
= 56 u - 9 u
= 47 u
47 u = 235
1 u = 235 ÷ 47 = 5
Number of students in the end
= 21 u + 56 u
= 77 u
= 77 x 5
= 385
Answer(s): 385