can be
a)210
b)200
c)190
d)180
2006-10-03 06:30:44 · 6 answers · asked by ramana n 1 in Science & Mathematics ➔ Mathematics
210
If you have twenty positive numbers that have an average of 20, then their total sum is 400. To find what the highest possible could be you have to sum the lowest possible 19, (which would be 1 through 19 = 190,) and see what you have to add to them to make 400.
2006-10-03 06:35:51 · answer #1 · answered by capu 5 · 1⤊ 0⤋
Answer 210
(1+2+3+...+19 +x)/20 =20
19*20/2 + x = 400
x = 210
2006-10-03 06:45:11 · answer #2 · answered by rwbblb46 4 · 0⤊ 0⤋
Assuming whole numbers, the lowest possible out of 19 numbers is the SUM of 1-19, or 190. In order to average 20, 20 numbers must sum to 400, which makes the remainder 210 or the largest possible 20th number...
2006-10-03 06:36:39 · answer #3 · answered by DrJunk 3 · 0⤊ 0⤋
The answer is 381. So the highest of that group is 210 i'd pick that one.
2006-10-03 06:34:49 · answer #4 · answered by M.B. 4 · 0⤊ 1⤋
210, assuming we're talking about integers.
Thanks for the teaser
2006-10-03 06:35:40 · answer #5 · answered by Anonymous · 1⤊ 0⤋
All of the above. Just kidding! :)
2006-10-03 06:33:52 · answer #6 · answered by arum 3 · 0⤊ 1⤋