Question

A bike rental company rented out 6 bikes in its first month. The number of bikes it rented tripled each month.

What was the total number of bikes the company rented out for the first 6 months?

Answer 1

Explanation:

Answer 2

Hi there!

The total number of bikes rented is 2,184

If you plug in the correct numbers into the formula


`a (1- r^(n) )/(1-r)`

Then you get


`6 (1- 3^(6) )/(1-3)`

And when the fraction is simplified it looks like this


`6 (-728)/(-2)`

Once this is in simplified form you take the 6 and put it over 1 like so


`(6)/(1) * (-728)/(-2)`

Then you find the prime factors of 6 and factor the -2 like so


`(3*2)/(1) * (-728)/(-1*2)`

Once this is done cancel out the 2


`(3)/(1) * (-728)/(-1)`

Then multiply -728 by 3


`(-2184)/(-1)`

Then divide to get 2184

Your friend, ASIAX