Question 133757
First, from the problem description, you can write:
{{{W = kt}}} where W is the amount of water used in time, t. k is the constant of variation. Now substitute the given values of W (4.6 gallons) and t (23 minutes) to find the value of k.
{{{4.6 = k(23)}}} Divide both sides by 23.
{{{k = 4.6/23}}}
{{{k = 0.2}}} so now the equation for this problem is:
{{{W = 0.2t}}} Substitute t = 4 minutes to find the amount of water, W.
{{{W = 0.2(4)}}}
{{{W = 0.8}}} gallons.