5 people wrote postive integers on a cards. If the arithmetic mean of the five cards numbers is 15 what is the greatest integer that could be on one of the cards?
2007-08-12 11:36:43 · 11 answers · asked by rogue chedder 4 in Science & Mathematics ➔ Mathematics
The largest number possible, call it N, corresponds to the following responses:
1, 1, 1, 1, N
(N+4)/5 = 15
N+4 = 75
N=71
2007-08-12 11:43:23 · answer #1 · answered by сhееsеr1 7 · 1⤊ 0⤋
Since they wrote positive integers, then let us assume the other four all wrote 1, the lowest positive integer. Then 1+1+1+1 +x/5 = 15
4+x = 75
x = 71.
If you assume the other four could have written 0, then the greatest number possible would be 75.
2007-08-12 18:45:01 · answer #2 · answered by Edgar Greenberg 5 · 1⤊ 0⤋
the average is 15. so 15 x 5 = 75
75 is the sum of 5 positive integers. Besides 0, the minimun number is 1 so 75 - 4 = 71
71 is the greatest integer
2007-08-12 18:43:09 · answer #3 · answered by 7 · 1⤊ 0⤋
71
2007-08-12 18:47:44 · answer #4 · answered by Bri 3 · 0⤊ 0⤋
(4+71)/5 = 15, so 71 assuming everyone else wrote "1" and not 0.
2007-08-12 18:43:25 · answer #5 · answered by supastremph 6 · 1⤊ 0⤋
71
2007-08-12 18:44:36 · answer #6 · answered by KIKI 2 · 0⤊ 2⤋
71????? I'm guessing 4 people could have written 1 on theirs making a total of 75, and 75 divided by 5 is 15. Am I right?????
2007-08-12 18:42:16 · answer #7 · answered by Anonymous · 2⤊ 3⤋
The surreal answer is margarine
2007-08-12 18:49:37 · answer #8 · answered by Anonymous · 0⤊ 0⤋
20 ?
2007-08-12 18:41:59 · answer #9 · answered by *mik 3 · 0⤊ 3⤋
Trick question. The answer is elephant.
2007-08-12 18:44:02 · answer #10 · answered by Lex Luthor 2 · 2⤊ 3⤋