There are 4 quarts in 1 gallon. How many quarts are in 4 gallons?

a 4

b 8

c 16

d 9

How many yards are in 504 inches?

a 42

b 14

c 168

d 1512

Kordell is able to complete 14 math problems in 21 minutes. Gabriel is able to complete 6 math problems in 10 minutes. Determine how many problems each student can complete per minute. Who can complete problems more quickly?

a Kordell

b Gabriel

c Both students completed problems at the same pace