Richard is organizing the picnic lunch for a group of 4th graders. He recalls at last picnic 20 students use 80 napkins assuming the same rate this time how many napkins should he pack for 200 4th graders
If 20 students used 80 napkins you can assume that each student used 4 napkins (80/20=4). At this rate, 200 students would also use 4 each, meaning you would need 800 (200 x 4=800) napkins!
