Joey has a collection of model cars.   his favorite are the red ones, which make up 30% of his collection.   if there are 27 red ones, how many model cars does joey have?
 

How to write four times a number,minus 6,is equal to theee times the number+8 as an equqtion

George is putting trim around his rectangular deck, including the gate. he will need 44 feet of trim to do the entire deck. if the deck is 13 feet long, how wide is the deck?

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)