Mr. Harris has bags of apples on sale! Each bag contains the same number
of apples. Your mom buys 2 bags and gets a total of 16 apples. Your
grandmother buys 10 bags. How many apples did she get?
If your mom bought 2 bags of apple and it contained 16 apples then 16 apples ÷ 2 bags = 8 apples/per bag. then your grandma buys ten bags so 10 x 8 = 80.