Question

If n(U)=125 ,y is 2 times x and z is 10 more than x
Find the value of x,y and z

Answer 1

y is 2 times x

y = 2x

z is 10 more than x

z = x + 10

Solve x:

x + y + z = x + 2x + x + 10 = 4x + 10

4x + 10 = 125

4x = 115

x = 115 ÷ 4

x = 28.75

Find the value of x, y and z

x = 28.75

y = 2(28.75) = 57.5

z = x + 10 = 28.75 + 10 = 38.75

Answer:  x = 28.75, y = 57.5 and z = 38.75