Lola is placing appetizers on plates. She has 63 spring rolls and 84 cheese cubes. She wants to include both appetizers on each plate. Each plate must have the same numbers of spring rolls and cheese cubes. What is the greatest number of plates she can make using all of the appetizers? How many of each type of appetizer will be on each of these plates
GCD(63,84) = 21
so, 21 plates of 3 rolls and 4 cubes