Question

There are 1400 student ina school.student teacher ratio is 35:2.how many teacher will join then the ratio become 25:2

Answer 1

Answer:

Given : Total number of students = 1400

Ratio of students and teachers = 25:2

then student's : teachers = 25 : 2

student's/teachers = 25/2

1400/teachers = 25/2

teachers = (2×1400)/25

teachers = 2×56

teachers = 112

Answer 2

32 teacher will join then the ratio 25:2

Step-by-step explanation:

Total number of students=1400

Ratio of student and teacher in a school=35:2

Let students=35x

Teacher=2x

$35x=1400$

$x=\frac{1400}{35}=40$

Number of teachers=$40\times 2=80$

New ratio=25:2

Let x be the number of teachers will join

$\frac{1400}{80+x}=\frac{25}{2}$

$80+x=\frac{1400\times 2}{25}$=112

$x=112-80=32$

Hence,  32 teacher will join then the ratio 25:2

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