# boat problem

• Sep 19th 2009, 01:57 AM
aeroflix
boat problem
A boat costs x dollars, and this cost is to be shared equally by a group of people. In terms of x, how many dollars less will each person contribute if there are 4 people in the group instead of 3 ?
• Sep 19th 2009, 03:47 AM
Prove It
Quote:

Originally Posted by aeroflix
A boat costs x dollars, and this cost is to be shared equally by a group of people. In terms of x, how many dollars less will each person contribute if there are 4 people in the group instead of 3 ?

If there are three people each pays $\\frac{x}{3}$.

If there are four people each pays $\\frac{x}{4}$.

The difference is

$\\frac{x}{3} - \\frac{x}{4}$

$= \\frac{4x}{12} - \\frac{3x}{12}$

$= \\frac{x}{12}$.
• Sep 19th 2009, 04:57 AM
aeroflix
thanks so much!