Question

There are 81 cars in the CMC parking lot, which are all Acuras, Beetles, or Camrys. There are half as many Acuras as Beetles. The number of Camrys is 80\% of the number of Acuras and Beetles together. How many of the 81 cars are Beetles?

Answer 1

30 of the cars

Explanation:

I just did the question on Alcumus.

Hope this helped! :)

Answer 2

Answer: 30

Explanation:

Let x be the number of Beetles.

Then , the number of Acuras =
`(1)/(2)x`

Also, The number of Camrys is 80% of the number of Acuras and Beetles together.

Thus , the number of Camrys =
`0.8(x+(1)/(2)x)`

Now, the total number of cars in parking lot will be :-

`x+(1)/(2)x+0.8(x+(1)/(2)x)=81\\\\\Rightarrow\ (3x)/(2)+0.8((3x)/(2))=81\\\\\Rightarrow\ (3x+2.4x)/(2)=81\\\\\Rightarrow\ 5.4x=2*81\\\\\Rightarrow\ x=(162)/(5.4)=30`

Hence, there are 30 Beetles.