In 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.
Answers
Answered by
23
Answer:
Case 1
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.
Step-by-step explanation:
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Answered by
1
Answer:
200 teachers joined the school
Step-by-step explanation:
number of teachers = 1/14*2100
= 150
x/2100 = 2 / 21
x * 21= 2*2100
21 x = 4200
x = 4200/21
x =200
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