Which problem is an example of the equal groups, number of groups unknown structure?
◦ This month, Barry saved 8 times as much as last month. Last month, he saved $3. How much did Barry save this month?
◦ Barry's sandwich shop offers 3 kinds of meat and 2 kinds of bread. How many different sandwiches could he make if he uses one meat and one kind of bread for each?
◦ Barry saved $12 and Jill saved $6. Barry saved how many times as much money as Jill?
◦ Barry saved $24 total, and he saved $6 each month. For how many months had he been saving?