Joan can paint 2 rooms of the same size in 5 hours. If she painfs for 7 1/2 hours, how many rooms of the same size can she paint?

Ben works in his dads bakery packing bagels each package can have no more then 16 bagels 3/4 of the bagels in each package are plain what other fractions could represent the part of the bagels in each package that will be plain