The local car dealership sells both foreign and domestic cars. last month the dealer sold 5 domestic cars for every 2 foreign cars that were sold. if 21 cars were sold, how many were domestic?

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50