# Find Number of Footsteps

• Sep 6th 2010, 06:52 PM
fdrhs1984
Find Number of Footsteps
If the first dinosaur is 6 of Alisha's footsteps or 9 of Carlos' footsteps, and another dinosaur is x of Alisha's footsteps, how many of Carlos' footsteps will it be?
• Sep 6th 2010, 07:06 PM
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Quote:

Originally Posted by fdrhs1984
If the first dinosaur is 6 of Alisha's footsteps or 9 of Carlos' footsteps, and another dinosaur is x of Alisha's footsteps, how many of Carlos' footsteps will it be?

Think ratio.
• Sep 6th 2010, 07:29 PM
fdrhs1984
I don't follow. Can you set up the ratio?
• Sep 6th 2010, 07:42 PM
helloying
Let A be Alisha and C be Carlos.

1st dino:6A or 9C

6A=9C
A=(9/6)(C)
AX=(9/6)(C)(X)
• Sep 6th 2010, 08:21 PM
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Quote:

Originally Posted by helloying
Let A be Alisha and C be Carlos.

1st dino:6A or 9C

6A=9C
A=(9/6)(C)
AX=(9/6)(C)(X)

This is actually not right.

The ratio of Alisha's footsteps to Carlos's is 6:9.

A/C = 6/9
6C = 9A

We want to solve for C, not A

C = (9/6)A = (3/2)A

So when A = x, then C = (3/2)x
• Sep 7th 2010, 05:19 AM
fdrhs1984