If x varies inversely as y, then

x	—	60
y	2	10

Solution:

If x varies inversely as y we can write:

x ∝ 1/y

xy = k

Where k is proportionality constant

Therefore given the values in the above table can be written as:

(x) × 2 = 60 × 10

x = (60 × 10)/2

x = 300

✦ Try This: If x varies inversely as y, then

x	—	30
y	2	5

If x varies inversely as y we can write:

x ∝ 1/y

xy = k

Where k is proportionality constant

Therefore given the values in the above table can be written as:

(x) × 2 = 30 × 5

x = (150)/2

x = 75

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

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NCERT Exemplar Class 8 Maths Chapter 10 Problem 26

If x varies inversely as y, then x - 60 y 2 10

Summary:

If x varies inversely as y, then x = 300

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