Since 40%=40/100=4/10, we can divide 11 by 10 and multiply that by 4 to get the weight gained, which is 1.1*4=4.4. The weight gained paired with the starting weight = 10+4.4=14.4
16 pages/8 hrs
2 pages/ he
18/2=9
18 pages/9 hrs
9 hours is your answer.
Seven eighth, 7 over 8, 7/8, 0.875,
X+x+20+2x=180
4x+20=180
4x=160
x=40
