7.Eighty people were invited to vote in the extension club's elections, and 9/10 of them voted. How many people voted in the elections?

Number of people voted in the elections = (9/10)*80 = 72

8. Richard has 17 yards of material. How many tote bags can he make if each bag takes 2/3 yards of material to make?

Number of bags = 17/(2/3) = 51/2 = 25.5

we can say that he can make 25 full bags.

9.Find the LCD and add the fractions.1/125 + 4/50

LCD = 250

1/125 + 4/50 = 2/250 + 20/250 = 22/250 = 11/125

10.Subtract; then reduce answer to lowest terms.5/22- 1/41

5/22- 1/41 = (205 - 22)/902 = 183/902

11. Andy put down 1/14 inch thick subflooring. Next, he nailed down 3/16 inch thick underlay. On top of that, he nailed down 4/14 inch thick hardwood flooring. How thick was the result?