# Math Help - Finding the tip

1. ## Finding the tip

A meal costed $25.00 and the total cost of the restaurant bill is$31. Tax and tip are unknown. If the ratio of the amount of the tax to the amount of the tip is 1 to 3, what is that amount of the tip?

Why is is $4.50? 2. ## Re: Finding the tip Originally Posted by mjoshua A meal costed$25.00 and the total cost of the restaurant bill is $31. So Tax and tip together are 31- 25=$6.00

Tax and tip are unknown. If the ratio of the amount of the tax to the amount of the tip is 1 to 3
So the tax is 3 times as large as the tip. If we call the amount of the tip "t", then the amount of the tax is 3t.

, what is that amount of the tip?
tip+ tax= t+ 3t= 6. Solve that equation for t.

Why is is $4.50? It isn't. According to you the question asked for the "amount of the tip"$4.50 is the amount of the amount of the tax.

3. ## Re: Finding the tip

Yes, I gave the question verbatim so now what..? I guess I need the right formula for the tip then to obtain \$4.50?