#1**+2 **

1/J + 1/10 =1/6

Solve for J:

1/10 + 1/J = 1/6

Bring 1/10 + 1/J together using the common denominator 10 J:

(J + 10)/(10 J) = 1/6

Cross multiply:

6 (J + 10) = 10 J

Expand out terms of the left-hand side:

6 J + 60 = 10 J

Subtract 10 J + 60 from both sides:

-4 J = -60

Divide both sides by -4:

**J = 15 - hours that will take Jim to mow the lawn alone.**

Guest Nov 10, 2017

edited by
Guest
Nov 10, 2017