During a class gathering,
910 of the students were boys and the rest were girls. Halfway, 437 more girls joined in the gathering and there were
38 as many boys as girls. Find the number of students at the class gathering in the end.
|
Boys |
Girls |
Before |
9x1 = 9 u |
1x1 = 1 u |
|
|
+ 437 |
After |
3x3 = 9 u |
8x3 = 24 u |
The number of girls remains unchanged.
LCM of 3 and 9 = 9.
Number of more girls who joined in
= 24 u - 1 u
= 23 u
23 u = 437
1 u = 437 ÷ 23 = 19
Number of students in the end
= 9 u + 24 u
= 33 u
= 33 x 19
= 627
Answer(s): 627