The parking lot at a grocery store has 50 cars in it 18% of the cars are blue How many of the cars are blue

Answer 1

You can solve this problem in more than one way. One method would be to multiply the number of cars in the lot by 18% (usually written in decimal form):

18% • 50 = 0.18 • 50 = 9 blue cars

You could also use equivalent ratios:

x = 18

50 100

x • 2 = 18

50 • 2 100

x = 9 blue cars