Question

P varies inversely with Q, and P=12 when Q=8. Find P when Q=3.

Answer 1

32

Explanation:

Given :

• P ∝ Q⁻¹ or P ∝ 1/Q

Finding the propotionality constant

• P = k/Q
• 12 = k/8
• k = 12 * 8 = 96

Finding P in Case (ii)

• P = k/Q
• P = 96/3
• P = 32