There are some students in Hall A and Hall B. If 14 students move from Hall A to Hall B, both halls will have the same number of students. If 4 students move from Hall B to Hall A, then the ratio of the number of students in Hall A to the number of students in Hall B will be 8: 5. How many students are there in hall B?
Answers
Answered by
5
Let no of students in hall A ,B be x,y resp
So x-14=y+14
X= y+28
X+4/y-4=8/5
5x+20=8y-32
5x =8y-52
5(y+ 28)=8y-52
5y+140=8y-52
-3y =-192
y=64
X= 64+28= 92
8y+224=5y-20
3y=-244
So x-14=y+14
X= y+28
X+4/y-4=8/5
5x+20=8y-32
5x =8y-52
5(y+ 28)=8y-52
5y+140=8y-52
-3y =-192
y=64
X= 64+28= 92
8y+224=5y-20
3y=-244
Answered by
0
Answer:
Is there a non-algebra method of doing this?
Step-by-step explanation:
My kid is P6 this year and saw this question. Problem is, she has not learnt algebra yet. Syllabus has not come there yet! I am just wondering if there was possibly a way to do this without algebra?
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