Find your Math Personality!

Find your Math Personality!

# In case of inverse proportion, a₂ = b₂

**Solution:**

In the case of inverse proportion

a₁ ∝ 1/a₂

b₂ ∝ 1/b₁

and therefore

a₁a₂ = b₁ b₂

Hence we can state, that in an inverse proportion a₂/b₁ = b₂/a₁

**✦ Try This:** Which of the ratios below are in inverse proportion with each other 3/2, 5/6, 6/9, 5/7, 12/10, 21/15

In the case of inverse proportion

a₁ ∝ 1/a₂

b₂ ∝ 1/b₁

and therefore

a₁a₂ = b₁ b₂

As per the above relation i.e. a₁a₂ = b₁ b₂ the pair of ratios in inverse proportion are:

1. 3/2, 6/9 2. 5/6, 12/10 3. 5/7, 21/15

**☛ Also Check: **NCERT Solutions for Class 8 Maths Chapter 13

**NCERT Exemplar Class 8 Maths Chapter 10 Problem 39**

## In case of inverse proportion, a₂ = b₂

**Summary: **

In case of Inverse proportion a₂/b₁ = b₂/a₁

**☛ Related Questions:**

- If the area occupied by 15 postal stamps is 60 cm², then the area occupied by 120 such postal stamps . . . .
- If 45 persons can complete a work in 20 days, then the time taken by 75 persons will be ______ hour . . . .
- Devangi travels 50 m distance in 75 steps, then the distance travelled in 375 steps is _______ km.

Math worksheets and

visual curriculum

visual curriculum