Question

In a primary school there shall be 3 teachers to 60 students. If there are 400 students
enrolled in the school, how many teachers should be there in the school in the same ratio
In the given figure, ABC ia triangle. Write all possible ratios by
taking measures of sides pair wise.
8cm
10 cm
(Hint: Ratio of AB: BC 8:6)
6cm​

Answer 1

Answer

In a primary school there shall be 3 teachers to 60 students. If there are 400 students enrolled in the school, how many teachers should be there in the school in the same ratio?

Class 8th

AP - Mathematics

5. Comparing Quantities using Proportion

Answer

Number of teachers for 60 students = 3

Number of teachers for 400 students = X

The ratio of students = 60:400

The ratio of teachers = 3:X

The ratio of teachers = The ratio of students

60:400 = 3:X

⇒

⇒

⇒X = 20

∴ There are 20 teachers for 400 students in the school

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