Of a set of 30 numbers, average of first 10 numbers = average of last – McqOptions

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1.	Of a set of 30 numbers, average of first 10 numbers = average of last 20 numbers. Then the sum of the last 20 numbers is?
A.	Sum of first ten numbers
B.	2X sum of first 10 number
C.	Sum of last ten number
D.	2X sum of last ten number
Answer» C. Sum of last ten number

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Of a set of 30 numbers, average of first 10 numbers = average of last 20 numbers. Then the sum of the last 20 numbers is?