On a Saturday night, each of the rooms at a certain motel was rented for either $40 or $60. If 10 of the rooms that were rented for $60 had instead been rented for $40, then the total rent the motel charged for that night would have been reduced by 40 percent. What was the total rent the motel actually charged for that night ?	Choose the most appropriate option.
A) $500 B) $800 C) $1,000 D) $1,600 E) $2,400
Let total rent the motel charge for all rooms =x   If 10 rooms that were rented for 60 $ had instead been rented for 40 $,   then total difference in prices = 20 $ * 10 = 200 $   Total rent the motel charged would have been reduced by 40 %   .4x = 200   =&gt; x= 500   $500nswer $500
<result>A</result>
On a Saturday night, each of the rooms at a certain motel was rented for either $40 or $60. If 10 of the rooms that were rented for $60 had instead been rented for $40, then the total rent the motel charged for that night would have been reduced by 40 percent. What was the total rent the motel actually charged for that night ?