Question

PLEASE NEED HELP ASAP
Mr. Long has 24 students present in his class. One-half of the class is working on a science project. One-eight of the class is solving math problems.The rest are reading library books. How many students are reading library books?

a.3

b.4

c.6

d.9

e.12

PLEASE HELP

Answer 1

I get 9 for this one.

Answer 2

1/2 science
1/8 math
X reading

You have to convert to fractions to 24ths so...

1/2 will turn into 12/24

1/8 will turn into 3/24 because 24 divided by 8 = 3 so 1/8 times 3 give gives you 3/24

Then you add the 2 fractions so...

12/24 + 3/24 = 15/24

The rest of the kids are reading so...

24/24 - 15/24 = 9/24

Therefore 9 students are reading.