A library has an average of 510 visitors on Sundays and 240 on other day. The average number of visitors in a month of 50 days starting with sunday is
Choices: A) 280 B) 285 C) 171 D) 295 E) 275
Explanation:   As the month begin with sunday, so there will be five sundays in the month. So result will be:   =(510×5+240×25/30)=(8550/50)= 
<gadget id="calculator">(8550/50)</gadget>
<output>171</output>
171   Answer: Option 171
<result>C</result>
A library has an average of 510 visitors on Sundays and 240 on other day. The average number of visitors in a month of 50 days starting with sunday is