The cost c of printing a magazine is jointly proportional to the number of pages p in the magazine and the number of magazines printed m

Find the constant of proportionality if the printing cost is $50.312.5 for 3500 copies of a 115 page magazine k=?

1 answer

We can write the equation for the cost as:
c = kp * pm

We are given that the cost c is $50.312.5 for 3500 copies of a 115-page magazine. Therefore, we have:
50.312.5 = k * 3500 * 115

To find the constant of proportionality k, we can solve for it:
k = 50.312.5 / (3500 * 115)
k = 0.00128

So, the constant of proportionality k is 0.00128.