N a school of 2100 students, the ratio of teachers to students is 1:14. some teachers join the school and the ratio changes to 2:21.find the number of teachers who joined the school.
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Answered by
16
50 teachers joined the school.
Step-by-step explanation:
The ratio of teachers to students = 1 : 14
So the number of teachers be 'x' and students be '14x'
according to the given statement number of students = 2100
Therefore, 14x = 2100
x = 150
The number of teachers who join the school = y and the ratio = 2 : 21
3150 + 21y = 4200
21y = 4200 - 3150
21y = 1050
y = 50
50 teachers joined the school.
Learn more about ratio problem : https://brainly.in/question/9763381
Answered by
0
Answer:
50
Step-by-step explanation:
Let teacher be x
A/q
x/2100=1/14
x=2100/14
=150
Teacher =150
Case 2
Let increased no. of teacher be 150+m
A/q
150+m/2100=2/21
=150+m=(2100*2)/21
=150+m=200
=m=200-150
Therefore m=50
Hence the number of teachers joined=50.
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