Posted by Jerald on .
16.Eliot spent 24 minutes solving 8 math problems.At that rate, how many math problems can he solve in 54 minutes?
a.12
B.16
C.18
D.24
A?
Can you explain why it isnt a

Math 
Ms. Sue,
24/8 = 3 minutes per problem
54/3 = 18 problems in 54 minutes
Another way to solve this problem is to set up a proportion. Cross multiply and solve for x.
8/24 = x/54
24x = 432
x = 432/24
x = 18 
Math 
k,
C.because it takes 3 min per problem which equal out to 8 problem in 24 min and in 54 min you can solve 18.

Math 
Jerald,
Oh,thanks! I get it now

Math 
Ms. Sue,
You're welcome. :)