Hi, everyone!
THE PROBLEM:
A man recently bought two cars, but afterwards found that they would not answer the purpose for which he wanted them. So he sold them for $1200 each, making a loss of 20%, on one car and a profit of 20%, on the other.
Did he make a profit on the whole transaction, or a loss? And how much?
Test yourself!
The right answer you can find in comments.
Monday, January 28, 2008
Monday, January 21, 2008
A Horse & A Man
Hi there!
THE PROBLEM:
A man has bought a horse for $300, and then he has resold it for $400. But later he has found more advantageous buyer, bought the horse back for $500 and sold it then for $600.
How much has the man earned?
The right answer you can find in comments.
THE PROBLEM:
A man has bought a horse for $300, and then he has resold it for $400. But later he has found more advantageous buyer, bought the horse back for $500 and sold it then for $600.
How much has the man earned?
The right answer you can find in comments.
Friday, January 18, 2008
The Problem about Bacteria
Hallo!
THE PROBLEM:
There are bacteria in a glass. In one second each of bacteria is gone divided in two, after that each of appeared bacteria in one second gone divided in two etc. In one minute glass is full.
In what time glass was half-filled?
What do you think about it?
The right answer you can find in comments.
THE PROBLEM:
There are bacteria in a glass. In one second each of bacteria is gone divided in two, after that each of appeared bacteria in one second gone divided in two etc. In one minute glass is full.
In what time glass was half-filled?
What do you think about it?
The right answer you can find in comments.
Wednesday, January 16, 2008
The First Problem
Hi, everybody!
THE PROBLEM:
A salesman sells caps. One cap costs $20. A buyer agreed to purchase it, but he had only banknote $50. The salesman sent a boy with that banknote $50 to the neighbour to change. The boy came and gave $20+$20+$10. The salesman gave a cap and $30’ change. Not long after the neighbour came and told that $50 was bad money, demanded his money back. The salesman climbed in a cashdesk and returned him $50.
What loss was suffered by a salesman?
Try to answer.
THE PROBLEM:
A salesman sells caps. One cap costs $20. A buyer agreed to purchase it, but he had only banknote $50. The salesman sent a boy with that banknote $50 to the neighbour to change. The boy came and gave $20+$20+$10. The salesman gave a cap and $30’ change. Not long after the neighbour came and told that $50 was bad money, demanded his money back. The salesman climbed in a cashdesk and returned him $50.
What loss was suffered by a salesman?
Try to answer.
Hallo & Welcome!
This blog was created for everyone who is interested in mathematics - in all senses.
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