7402.The average of five numbers is 24. If one of the numbers is 30, what is the sum of the other four numbers?A.90B.96C.100D.104
7404.A shopekeeper sells an items at a 15% discounts, If the original price is $200, what is the selling price?A.$170B.$180C.$170D.$190
7407.If the arithmetic mean of seventy-five numbers is calculated, it is 35. If each number is increased by 5, then mean of new number is _____?A.41B.39C.40D.42