Question

Samuel has a collection of toy cars. His favorites are the 27 red ones which make up 60%, percent of his collection.

Answer 1

set up a proportion.    you have 60/100 and 27/x

now you do 27x100=2700   then divide that by 60

with a calculator you get 45

then you can check your answer by saying 60% of 45 and you get 27         Samuel has 45 toy cars in total