Question

Suppose y varies inversely with x, and y = 39 when x = 13. What is the value of y when x = 26 ?

Answer 1

9514 1404 393

Answer:

y = 39/2 = 19.5

Explanation:

When x is multiplied by 2 from 13 to 26, y will be multiplied by the inverse of that:

y = (1/2)(39) = 39/2 = 19.5