Question

P is inversely proportional DY. IF P=1.2=when y=100, calculate

a the value of p when y=4
b the value of y when p=3​

Answer 1

a. P = 30

b. Y = 40

Explanation:

Given the following data;

P = 1.2

Y = 100

First of all, we would have to determine the constant of proportionality;

P = k/Y (inverse proportion or relationship)

1.2 = k/100

k = 1.2 * 100

k = 120

a. To find the value of p when y = 4;

P = k/Y

P = 120/4

P = 30

b. To find the value of y when p = 3;​

P = k/Y

Y = k/P

Y = 120/3

Y = 40