Question

The value of Y is directly professional to the value of X when X equals 780 Y equals 130 what is the value of X1Y equals 75

Answer 1

The value of X is 450

From the question given :

• Y = kX

We can find k thus ;

130 = 780k

k = 130/780

k = 0.16667

The proportional expression is : y = 0.16667x

Value of X when y = 75

75 = 0.16667x

x = 75/0.166667

x = 450

Hence, the value of X is 450