Aboat travels 30 miles upstream in 5 hours. the return trip downstream takes 3 hours. if the boat travels at the same rate on both parts of the trip, what is the rate of the current, in miles per hour?

5/30-x = 10/30+x
5(30+x) = 10(30-x)
150+5x = 300-10x
5x+10x=300-150
15x = 150
x= 10 mph 

D. 10x is the correct answer a and c are the common factor of 30 and 20 but it’s not the greatestonly b and d are the answers since 30x^3 -20x20x only have one x and 30 have 3 xso it can only be d.10xhope this will !

50% of students voted for candidate b.