Solution the average of the first four of five numbers is 40 and that of the last four numbers is 60. the difference of the last and the first number is:

Solution the average of the first four of five numbers is 40 and that

1.	Solution the average of the first four of five numbers is 40 and that of the last four numbers is 60. the difference of the last and the first number is:
Answer» DIFFERENCE between 1ST and LAST will be 80

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Solution the average of the first four of five numbers is 40 and that of the last four numbers is 60. the difference of the last and the first number is:

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