1. ## 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 ?

2. 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 $\displaystyle \$\frac{x}{3}$. If there are four people each pays$\displaystyle \$\frac{x}{4}$.

The difference is

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

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

$\displaystyle = \$\frac{x}{12}\$.

3. thanks so much!