A WOMAN GOES TO THE COUNTER AND PUTS A BOOK BEFORE THE MAN THERE THE MAN SAYS THAT THE PRICE IS 1 THE LADY PAYS RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

I'll meet you at the corner. Did you answer this riddle correctly?
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The third equation has a term with a pair of whistles. The last line involves a single whistle.

Furthermore, the man in the second and third lines are wearing a whistle, but the man in the last line is not wearing a whistle. Presumably the value of the whistle should be accounted for to get the correct answer.

The pictures can be translated into the following equations:

shoes + shoes + shoes = 30
shoes + (man + whistle) + (man + whistle) = 20
(man + whistle) + 2(whistles) + 2(whistles) = 13
shoes + (man) x (whistle) = ?

From the first equation we can solve for the shoes value:

shoes + shoes + shoes = 30
3(shoes) = 30
shoes = 10

We can then solve the second equation for the (man + whistle) value:

shoes + (man + whistle) + (man + whistle) = 20
10 + 2(man + whistle) = 20
2(man + whistle) = 10
man + whistle = 5

Then we solve the third equation for the whistle:

(man + whistle) + 2(whistles) + 2(whistles) = 13
5 + 4(whistles) = 13
4(whistles) = 8
whistle = 2

We also need to solve for the value of the man:

man + whistle = 5
man + 2 = 5
man = 3

Now we can evaluate the final expression, remembering the order of operations that multiplication should be evaluated before addition:

shoes + (man) x (whistle) = ?

10 + 3 x 2
= 10 + 3 x 2
= 10 + 6
= 16 Did you answer this riddle correctly?
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He was born in Hospital room '1995' but he died in the year of 1953. Did you answer this riddle correctly?
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You don't knock on your own hotel door and the man did. Did you answer this riddle correctly?
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The answer to the riddle is the woman killed her because she was hoping to see this man at her sister's funeral. She saw this man at her mother's funeral and fell in love. With the hope to meet the man, she killed her sister. Did you answer this riddle correctly?
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England Did you answer this riddle correctly?
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The young lady was presented with a bill which belonged to the elderly woman. She had asked the waiter to collect the bill from her daughter. Did you answer this riddle correctly?
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Comet books Did you answer this riddle correctly?
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The loss is $100. Did you answer this riddle correctly?
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565 Did you answer this riddle correctly?
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The baby in the pregnant woman's womb is the youngest in the Bus. Did you answer this riddle correctly?
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50 pounds.

In the beginning it is 99 pounds water and 1 pound other stuff. At the end the 1 pound other stuff is 2 percent so the total weight is 50 pounds. 50 pounds - 1 pound other stuff = 49 pounds water. So 99 pounds - 49 pounds = 50 pounds water lost. Did you answer this riddle correctly?
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An antique! Did you answer this riddle correctly?
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50 Did you answer this riddle correctly?
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Her voice. Did you answer this riddle correctly?
YES  NO