If an object travels 90 feet in 3 seconds, what is the object’s approximate speed in miles per hour? (Note: 1 mile = 5280 feet) Choose the correct choice from the following answers.
A) 17.36
B) 20.45
C) 23.87
D) 26.92
E) 29.56

Rationale: "90 feet / 3 seconds = 30 feet / second ( 30 feet / second ) * ( 3600 seconds / hour ) * ( 1 mile / 5280 feet ) = 20.45 miles / hour ( approximately ) the answer is b ."
Answer: B