Question

If x and y vary directly, find the values of x, y, and z:

x	3	x	y	10
y	36	60	96	z

Answer 1

x and y are in direct variation

`∴3/36="x"/60="y"/96=10/"z"`

`⇒3/36="x"/60,3/36="y"/96,3/36=10/"z"`

x =`3/36xx60,` y =`3/36xx96,`

z =`10xx36/3`

⇒ x = 5, y = 8, z = 120

x	3	5	8	10
y	36	60	96	120