Math question about percentage :(

Question

There are 100 parking spaces at the office. Each space can take either 1 car or 3 bicycles. The parking is completely full, with 60% of spaces occupied by cars and 40% by bicycles. Every person in this office either walks, takes public transport, drives a car (alone) or cycles to work.Knowing that 40 people walking to work and 80 catch public transport, which percentage of people cycles to work?

 

*40%
*36%
*35%
*30%
*None of the above

Answer 1

You should know that percent is out of 100, so 40% of 100 is 40. If you have to show your work...

 

0.4(100) = 40 spaces of bicycles

 

40(30) = 120 total bicycles

 

There are 60 cars.

 

120/(120 + 60 + 40 + 80) = 120/300 = 40%