Hello, Alyssa.
Ex 1: At a recent party, it cost $9and 1/2 (it does not let me to type as mix number and I put "and") for refreshments for 10 guests. At this rate, how much would it cost to have refreshments for 80 guests?
Ex 2:Mary has saved $17 and 1/4 in the past 3 weeks. At this rate, how much will she save in 15 weeks?
I hope that helps