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`Purple

The admission fee at a small fair is 1 .50 for children and 4 .00 for adults . On a certain day , 2200 people enter the fair and 5050 is collected . How many children and how many adults attended

To solve the problem , we need to identify the unknowns . In the above problem , the unknowns are the number of children and the number of adults (Stapel 2008

We represent the unknowns by a variable . We can let `c ' be the number of children and `a ' be the number of adults

We

then form the equations according to the problem By manipulating the equation

a 2200 - c

Then we can use the new equation for substitute it to the 4 (2200 - c 1 .5c 5050 (8800 - 4c 1 .5c 5050

8800 - 4c 1 .5c 5050

8800 - 2 .5c 5050

8800 - 5050 2 .5c

3750 2 .5c

c 3750 /2 .5

c 1500

Therefore , the value to solve for the a 1500 2200

a 2200 - 1500

a 700

The `Tegrity

AT T charges 9 .75 plus 10 cents per minute , or part thereof . While Sprint charges 15 cents per minute . If I will to make 300 minutes of call per month , which...

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