The average of 30 numbers is 25. If each number is multiplied by 5, find the new average?
Choose the correct choice from the following options.
A) 115  B) 125  C) 135  D) 145  E) 155

Rationale: "sum of the 30 numbers = 30 * 25 = 750 if each number is multiplied by 5 , the sum also gets multiplied by 5 and the average also gets multiplied by 5 . thus , the new average = 25 * 5 = 125 . answer : b"
Answer: B