An electronics store put two types of car radios on sale. One model sold for \$87 and the other sold for \$119 dollars. During the sale the receipts for 25 dollars radios sold were \$2,495 how many of the less expensive radio?
Removing the word "dollars" from the question, it looks like there were a total of $25$ radios sold. If there were $x$ sold at $\$87$ and $y$ sold at $\$119$, the total income was $87x+119y$. This gives $x+y=25, 87x+119y=2495$