Question 133752
You can use proportions to solve this problem:
{{{40/15 = x/270}}} In words... 40 mins to solve 15 problems is to x mins. to solve 270 problems. Simplify and solve for x.
{{{x = 40*(270)/15}}} Do the math.
{{{x = 10800/15}}}
{{{x = 720}}}minutes. Divide by 60 to find the number of hours.
{{{x = 12}}}hours to complete 270 problems.