a library has an average of 510 visitors on sundays and 240 on other days . the average number of visitors per day in a month of 30 days beginning with a sunday is :
"explanation : since the month begins with a sunday , to there will be five sundays in the month . required average = ( 510 × 5 + 240 × 25 / 30 ) = 8550 / 30 = 285 answer : d"
divide(add(multiply(add(floor(divide(30, add(const_3, const_4))), const_1), 510), multiply(subtract(30, add(floor(divide(30, add(const_3, const_4))), const_1)), 240)), 30)