Question

Each car in a rental fleet is either red or white, and there are 75 cars total. There are three more white than twice the number of red cars. How many cars are white?

Answer 1

Number of red cars = x
Number of white cars = y

x + y = 75
y + 3 = 2x

x + y = 75
y = 75 - x

(75 - x) + 3 = 2x
78 = 3x
26 = x

y + 3 = 2(26)
y + 3 = 52
y = 49

There are 49 white cars.

Answer 2

Answer: 51

Explanation:

Let the number of red cars be r then the number of white cars is given by :-

`2r+3`

Since, the total number of cars = 75

Therefore, we have

`r+2r+3=75\\\\\Rightarrow\ 3r+3=75\\\\\Rightarrow3r=75-3\\\\\Rightarrow\ 3r=72\\\\\Rightarrow\ r=24`

Therefore, the number of red cars = 24.

and the number of white cars = 2(24)+3=48+3=51