The average of 11 numbers is 21 . The average of seven of those numbers is 25. What is the average of the remaining four numbers?

Question

anonymous · Answer

Has anyone on here taken there SAT yet?  I am taking a SAT prep test I found online and am a little concerned but am sure I will do well.  Any advice for preparing?

anonymous · Answer

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anonymous · Answer

SAT prep is more about understanding what they are askiing for....repetition is the only advice I can give you.  My son just went through this last year.

anonymous · Answer

for this problem; y/7 = 25
                         y/4 = x

so, (25 + x)/2 = 21

x =17
so the average of the other 4 number is 17

anonymous · Answer

how did you get the answer to that question?

anonymous · Answer

oh wait.. I see u already wrote it. :)

anonymous · Answer

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