Speed of current

Question

A boat travels 37 mph I still water. If it travels 308 miles with the current and 210 miles against current. What is speed of current

Answer 1

current speed= 7 mph

time each way= 7 hours

308= (37+c)t

210=(37-c)t

518=74t

t=518/74=259/37=7

210= (37-c)(259/37

210= 259- 259c/37

37(210-259=-259c

c=(37)(49)/259= 7 mph=current speed

308=(37+7)t= 44t

210=(37-7)t=30t

t=210/30=7 hours

t=308/44= 7 hours