3 1/2 miles = 7/2 miles 1/2 hours= 30 minutes So, In 30 mins, travelled 7/2 miles In 1 min, travelled 7/2 ÷ 30= 7/2× 1/30 = (7×1)/(2×30) = 7/60 miles In 60 mins, travelled (7×60)/60 miles = 420/60 miles = 7 miles. Hence, the speed is 7 miles per hour. Anything else