Question

x, y and z are related quantities such that x varies directly as y and inversely as the square root of z. When x= 300 and y= 65, z=25. Calculate the value of x when y=468 and z=144​

Answer 1

Hi,

x=900

Explanation:

`x=k*(y)/(√(z)) \\if\ x=300\ and\ y=65\ and \ z=25\ then\ \\300=k*(65)/(√(25)) \\\\k=(300)/(13) \\\\When\ y=468\ and\ z=144\ then\\\\x=(300)/(13) *(468)/(12) \\\\x=900\\`