A library has an average of 510 visitors on Sundays and 240 on other day. The average number of
visitors in a month of 30 days starting with sunday is
Choose the correct choice from the following options:
A) 280
B) 285
C) 290
D) 295
E) 275

Rationale: "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 / 30 ) = 285 option b"
Answer: B