Two-fifths of one less than a number is less than three-fifths of one more than that number. What numbers are in the solution set of this problem? x<-5
x>-5
x>-1
x<-1

Aboat has a speed of 9 mph in calm water. it takes the boat 4 hours to travel upstream but only 2 hours to travel the same distance downstream. which equation can be used to find c, the speed of the current? 2(9 – c) = 4(9 + c) 9 + c = 4(9 – c) 9 – c = 2(9 + c) 4(9 – c) = 2(9 + c)