Out of 5 numbers , the average of first four is 26 and of last 4 is 25. What is the difference between the first and the last number?
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Answered by
15
Answer:
4
Step-by-step explanation:
the average of the first 4 numbers is 26 so their sum is 26*4=104
the average of the last four number is 25 so their sum is 25*4=100
so the difference in these 2 sums will give the difference between the first and the last term because the 3 middle numbers will repeat in both the sums and hence will get eliminated.
so the difference is 104-100=4
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0
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