A MAN WORKED AT A HIGH SECURITY INSTITUTION THE MAN TRIED TO LOG INTO RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

A fireplace Did you answer this riddle correctly?
YES  NO  

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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The letter "N" Did you answer this riddle correctly?
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It was a bright and sunny day. Did you answer this riddle correctly?
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Any, Houses can't jump Did you answer this riddle correctly?
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The man is a minister. Did you answer this riddle correctly?
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All of them. Houses can't jump! Did you answer this riddle correctly?
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The Tower of Babel Did you answer this riddle correctly?
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Twinkle and Rinki start on opposite sides of the river Did you answer this riddle correctly?
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None. The boat is floating on the water, so as the tide rises, so does the ladder. Did you answer this riddle correctly?
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The periodic table. Did you answer this riddle correctly?
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Take the fox over, return with nothing. Go over with one chicken, return with the fox. Go over with the second chicken, return with nothing. Finally, take the fox over. Did you answer this riddle correctly?
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One, he may have many Birthdays, but only one birth day. Did you answer this riddle correctly?
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The high performance IBM. There is no such thing as a high performance MAC. Did you answer this riddle correctly?
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One of Gollums riddles for Bilbo. The answer is time. Did you answer this riddle correctly?
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