Question

x and y very inversely. When x = 15, then y = 6. What will be the value of y when x = 9? 

A. 10 

B. 15 

C. 54 

D. 135

Answer 1

⇒ 15 × 6 = 9 × y

⇒ y = \(\frac{15\,\times\,6}{9}\) = 10