2006-07-17 08:45:47 · 16 answers · asked by K.I.D. 2 in Science & Mathematics ➔ Mathematics
not a trick question at all just a little math exercise... :). Couple of ya are correct so far.
2006-07-17 09:11:29 · update #1
you would lost 3 1/3 cents! not profit
2006-07-17 08:51:35 · answer #1 · answered by sorrells316 6 · 0⤊ 0⤋
Melted Penny (M) = 3 cents income
3M = 7 cents expense
3M = 9 income
3M = 7 expense
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3M = 2 profit
M = 2/3 profit
10 M = 20/3 profit
10 melted pennies = about 6 2/3 cents profit.
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Here is the mind bending part. If 3 pennies gives 2 cents profit, then 9 pennies should give 6 cents profit. And you would think that 1 left over penny to make 10 melted pennies would give 1/3 profit, but it doesn't, it gives 2/3.. weird huh?
2006-07-17 09:03:04 · answer #2 · answered by Anonymous · 1⤊ 0⤋
If it costs 7 cents to melt 3 pennies, then it would cost 7/3; 2 1/3 cents to melt a penny.
so a melted penny is worth 3 cents, but it costs 2 1/3 cents to melt it. So a melted penny is worthy a net of 2/3 cents.
so 10 melted pennies would have a net profit of 10*2/3 = 6 2/3 cents.
2006-07-17 08:51:44 · answer #3 · answered by Anonymous · 1⤊ 0⤋
So you profit 2 cents on every 3 pennies. Thus you profit 6 cents on 9 pennies. The last penny cost you 7/3 c to melt, but profits you 3 cents, making it a profit of 2/3 cent. You can't have 2/3 cents, so you probably get none, making your profit 6 cents.
2006-07-17 08:51:07 · answer #4 · answered by jenh42002 7 · 1⤊ 0⤋
I agree with jenh42002 and desolator814 assuming of course that the cost of melting pennies include the actual loss of those pennies. If not then your profit of 6 or 6.7 cents is outweighed by the loss of 10 pennies leaving a net loss of 3.3 or 4 cents as tony said. Is this a trick question?
2006-07-17 09:00:35 · answer #5 · answered by steve_writes 2 · 1⤊ 0⤋
20 cents
No hold on that's wrong.
Basically, 10 melted pennies are worth 30 cents but it has cost you 23 and one third cents to melt them (10 divided by 3, times 7 cents).
So your profit is 6 and 2 thirds cents - yeah, that looks right!
No, hold on again, that last penny is being melted on its own so that one will cost 7 cents all by itself so the cost is now 28 cents, so your proft goes down to 2 cents.
Yep that's my final answer..... TWO CENTS! (That's IF you are only melting 10 pennies)(Of course, the original pennies themselves cost 10 cents so I guess you would actually end up 8 cents in the hole) AAArrrrrrggg, this is one of those riddles that make my head spin!
2006-07-17 08:48:25 · answer #6 · answered by JaneB 7 · 1⤊ 0⤋
One Penny=(Raw material)=1c
Melted Penny=(Final Product)=3 c
Melting Expense=(Processing cost)=7c
Profit=Final Product-(Raw material + Processing cost)
Profit=7c-(1c+3c)=Net loss of 4 c on each penny
therefore, for 10 melted pennies Net loss of 40cents
2006-07-17 08:54:48 · answer #7 · answered by Zaphod B 2 · 1⤊ 0⤋
7 cents
2006-07-17 08:50:58 · answer #8 · answered by Jac 3 · 1⤊ 0⤋
10 cents
2006-07-17 08:48:05 · answer #9 · answered by Anonymous · 1⤊ 0⤋
10 pennies worth .3 ea = .30
10 pennies worth .7 to melt =.70
.70 (cost)-.30 (worth) = -.40
net loss = 0.40
2006-07-17 08:50:53 · answer #10 · answered by me3 1 · 1⤊ 0⤋