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December 21, 2014

December 21, 2014

Posted by **widyan** on Friday, January 20, 2012 at 5:10am.

- math -
**PsyDAG**, Friday, January 20, 2012 at 10:22amLet x = # of apples and y = # of oranges.

x + y = 163

x = 163 - y

.5x + .8y = 110

Substitute 163-y for x in last equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the second equation.

- math -
**Reiny**, Friday, January 20, 2012 at 10:24amlet the number of apples be x

let the number of oranges be y

x+y = 163 ---> y = 163-x

.5x + .8y = 110

5x + 8y = 1100

use substitution

5x + 8(163-x) = 1100

5x + 1304 - 8x = 1100

-3x = -204

x = 68

he has 68 apples and 95 oranges at first

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