# Two Rate Problems.

• Mar 1st 2011, 07:25 PM
wizkid94
Two Rate Problems.
I'm having difficulty with these two problems. I have the answers in front of me, but I don't know how to come to them on my own.

1. Use the letter d and the number 10 as required to write an expression that tells the number of 3-cent stamps that can be purchased for d dollars.

2. A truck went a distance of d miles in m minutes and arrived 1 hour late. How fast should the truck have been driven to have arrived on time?

• Mar 2nd 2011, 02:35 AM
HallsofIvy
Quote:

Originally Posted by wizkid94
I'm having difficulty with these two problems. I have the answers in front of me, but I don't know how to come to them on my own.

1. Use the letter d and the number 10 as required to write an expression that tells the number of 3-cent stamps that can be purchased for d dollars.

"d dollars" is 100d= (10)(10)d cents. How many times will three divide into that?

Quote:

2. A truck went a distance of d miles in m minutes and arrived 1 hour late. How fast should the truck have been driven to have arrived on time?
1 hour is 60 minutes. If the truck took m minutes and was an hour, it should have taken m- 60 minutes. A distance d miles in m- 60 minutes is what speed?

Quote:

You seem to be misunderstanding the purpose of this website. We will help you do your problems, not do them for you.
• Mar 9th 2011, 02:57 AM
wizkid94
Quote:

Originally Posted by HallsofIvy
"d dollars" is 100d= (10)(10)d cents. How many times will three divide into that?

1 hour is 60 minutes. If the truck took m minutes and was an hour, it should have taken m- 60 minutes. A distance d miles in m- 60 minutes is what speed?

You seem to be misunderstanding the purpose of this website. We will help you do your problems, not do them for you.

I have tried doing these on my own. How do you want me to ask?

Edit: Maybe I should ask "How to do it?" You don't have to finish the problem. I just want some direction.