#### Answer

a.) 4153(1 )/3 yards (exact), 4153.3 yd (rounded)
b.) 2.4 mile (rounded)

#### Work Step by Step

Given, The average depth of the world’s oceans is 12,460 ft a.) To find, the average depth in yards As we know 3 feet (ft) = 1 yard (yd) We are converting from a smaller unit to a larger unit (a foot is smaller than a yard) so divide. 12,460 feet = (12,460 )/3 = 4153(1 )/3 yards = 4153.33 yd b.) What is the average depth in miles, to the nearest tenth? Use a unit fraction with feet (the unit for your answer) in the numerator, and yards (the unit being changed) in the denominator. Because 5280 feet (ft) = 1 mile (mi), the necessary unit fraction is (1 mile)/( 5280 feet) Multiply 12,460 ft times the unit fraction. 12,460 ft * (1 mile)/( 5280 feet) = 2.35 mile = 2.4 mile (rounded)