Gary read 34 pages of a 340 book what percent did he read

Which number completes the inequality? 2/3 < _ < 7/9

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)