For this case, the first thing we must do is define variables.

We have then:

x: number of trips.

y: amount of money remaining.

We now write the equation for each person.

For Kaisorn we have:

Pata Thom we have:

**Answer:
**

**The system of equations that represents this situation is given by:**

**
**

F(10) = (10)^2 + 1

= 100 + 1

= 101

101 is the answer

1/2 / 3/1 use reciprocal—> 1/2 / 1/3= 1/5. your answer is 1/5 pound of coffee each