Question

let x varies inversely as y and y ＝60 when x=1.5 what is the value of x when y=4.5

Answer 1

∵ x and y are in inverse proportion

∴ x1 × y1 = x2 × y2

x × 4.5 = 1.5 × 60

x = (1.5 × 60) ÷ 4.5

x = 20