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Expert: Sherman D. - 11/11/2008


Question
Ten apples cost a penny, and 25 pears cost two pennies.  Suppose I buy 100 apples and pears for 9.5 pennies.  How many of each shall I have?

I'm having a problem with getting the three equations set up.  I can solve by substitution or elimination once I have the equations.

Answer
(1/10)a + (2/25)p = 9.5
a + p = 100

a = -p + 100

((-p + 100)/10) + (2/25)p = 9.5
(-1/10)p + 10 + (2/25)p = 9.5
(-1/50)p = -.5
p = 25

a = -25 + 100 = 75

so you bought 75 apples and 25 pears

and as you can see there are only 2 variables and 2 equations, and not 3.

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Sherman D.

Expertise

I can answer questions dealing in mathematics of all kinds except for Physics and Calculus, but i can answer questions in Pre-Calculus and Chemistry. I can also answer questions in Recipes of all kinds. I can find games cheats/walkthroughs, but i can`t find a specific game online or offline. I can also do history and recipes for alcoholic beverages.

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Mathematics, Recipes, History, and Games.

Education/Credentials
High School graduated. I graduated with honors, and i was in Beta Club for a year and a half.

Awards and Honors
Principle's list and A and B honor roll in high school only.

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