a library has an average of 140 visitors on sundays and 80 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 , so there will be five sundays in the month , required average = ( 140 * 5 + 80 * 25 ) / 30 = 2700 / 30 = 90 answer : a ) 90"
divide(add(multiply(add(floor(divide(30, add(const_3, const_4))), const_1), 140), multiply(subtract(30, add(floor(divide(30, add(const_3, const_4))), const_1)), 80)), 30)