Question

What is 5.6 × 10^−3 yd/year in feet per day?

    A. 6.813 × 10^−7  ft/day

   
B. 6.132 × 10^−6  ft/day    
C. 5 × 10^−6  ft/day    
D. 4.6 × 10^−5  ft/day
Please explain the answer :)

Answer 1

5.6x10^-3 yd/year in feet per day.

There are 3 feet in a yard

(5.6x10^-3)x3=1.68x10^-2 feet/year
Let's take there to be 365 days in the year (Fun fact: The actual duration of our year is 365 days 5 hours, 48 minutes 46 seconds)


`(1.68*10^(-2))/(365) = 4.6*10^(-5)`

Therefore the correct answer is D.