Answer :
420 divided by 12 = 35 hours flown by the bird in 1 hour.
35 x 7(hours) = 245 miles flown in 7 hours
35 x 7(hours) = 245 miles flown in 7 hours
first find miles per hour then multiply by 7
so 420/12=35
35 times7=245 mph
so 420/12=35
35 times7=245 mph