Three out of every five people who bought a new vehicle last year bought a 4-wheel-drive vehicle. if 2100 people purchased a vehicle last year, how many vehicles did not have 4-wheels drive?

840 people

Step-by-step explanation:

The ratio of people who DID buy a 4 wheel drive vehicle vs. total number of vehicles bought is 3:5

If 5=2100, then 3=1260 (2100/5=420, 420 x 1260)

2100-1260=840.

840 people did not buy a car with 4 wheel drive

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180