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#10351

linear equations

money

systems

easy

90 sec

A farmer is counting his chickens and ducks. He counts a total of 500 birds. He knows that chickens sell for $15 each and ducks sell for $22 each. If the total value of his birds is $9,100, which of the following systems of equations could be used to determine the number of chickens, $c$ , and the number of ducks, $d$ , he has?

A.

$c + d = 500$
$22 c + 15 d = 9100$

B.

$c + d = 9100$
$15 c + 22 d = 500$

C.

$c + d = 500$
$15 c + 22 d = 9100$

D.

$c + d = 9100$
$22 c + 15 d = 500$