Homework Help: algebra

Posted by john on Friday, January 27, 2012 at 12:43am.

mary went to the store for some fruit. The apples were $1.00 per pound and the oranges were $0.50 per poumd. She spent $5,00 all together and took home a total of 8 pond of fruit. How many ponds of apples and oranges did she buy?

algebra - PsyDAG, Friday, January 27, 2012 at 7:21pm
Let O and A stand for pounds of fruit.

O + A = 8

A = 8 - O

.5O + A = 5

Substitute 8-O for A in third equation and solve for O. Insert that value into the first equation and solve for A. Check by inserting both values into the third equation.

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