If the average (arithmetic mean) of a series of numbers is 20 and their sum is 160, how many numbers are in the series?
If the average (arithmetic mean) of a series of numbers is 20 and their sum is 160, how many numbers are in the series? If there are n numbers and their mean is 20, Sum n = 20 Given sum = 160 So, 20n = 160 n = 8
If there are n numbers and their mean is 20, Sum n = 20
Given sum = 160
So, 20n = 160
n = 8
1297 MCQ for effective preparation of the test of Average of Word Problems section.
Read the MCQ statement: If the average (arithmetic mean) of a series of numbers is 20 and their sum is 160, how many numbers are in the series? , keenly and apply the method you have learn through the video lessons for Average to give the answer. Record your answer and check its correct answer and video explanation for MCQ No. 404-13171.