The daytime telephone rate between two cities is 60 cents for the first 3 minutes and c cents for each additional minute. The total charge is reduced 60 percent on calls made after 10:00 P.M. The cost, in dollars, of a 33-minute call made at 10:30 P.M. between these two cities is:
Answers.
A) 0.4(0.60) + 35c	B) 0.4(0.60 + 9c)	C) 0.4(0.60 + 0.30c)	D) 0.6(0.60 + 30c)	E) 0.6(0.60 + 0.35c)
For first three minutes = 60 cents   Remaining minutes = 33 -3= 
<gadget id="calculator">33 -3</gadget>
<output>30</output>
30   charge for 32 minutes= 30c   total cost (if the call was made in daytime) = 0.60 + 30c   60% chargereducedon night calls =&gt; 40% charge   =&gt;0.4(0.60 + 30c)   Hence, Answer is 0.4(0.60 + 0.30c)
<result>C</result>
The daytime telephone rate between two cities is 60 cents for the first 3 minutes and c cents for each additional minute. The total charge is reduced 60 percent on calls made after 10:00 P.M. The cost, in dollars, of a 33-minute call made at 10:30 P.M. between these two cities is: