HelpHelpHelpHelpHelpHelpHelp

Question

 A cyclist left the city for a station, which was 16 km away. On the way back he reduced his speed by 4 km/hour. Find the speed of cyclist's during on his way back to the city if he spent 2 hour 20 minutes on the entire trip.

Answer 1

r represents his rate going

r - 4 represents the rate returning

16 / r represents the time going

16 / (r - 4) represents the time returning

[16 / r] + [16 / (r - 4)] = 7 / 3 2 1/3 in improper fracrtion

Can you solve for r and answer?