Question

The average of ten number is 7. if every number is multiplied with 12 then the average will be ?

• A. 84
• B. 65
• C. 19
• D. 22

Answer 1

Answer:

A. 84

• When every number in a data set undergoes the same arithmetic operation (addition, subtraction, multiplication, or division) by a constant value, the average of the set also undergoes the same operation by that same constant.

• In this specific problem, the original average of ten numbers is given as 7.

• Every number in the set is then multiplied by 12.

• According to the rule, if each number is multiplied by 12, the new average will be the original average multiplied by 12.

• Therefore, the new average = Original Average × Multiplier = 7 × 12 = 84.