A MAN WAS MURDERED IN HIS OFFICE RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

A Coffee Mug Did you answer this riddle correctly?
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She was throwing away all the W's... 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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Felice and Nicholas are the murderers. The numbers correspond to atomic numbers on the periodic table of elements: 'Fe-Li-Ce/Ni-Co-La-S'. Did you answer this riddle correctly?
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He never asked the cop where the scene of the crime was, so they knew that he had murdered his wife. Did you answer this riddle correctly?
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Paper Did you answer this riddle correctly?
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The man bought only a one way ticket for his wife whereas he bought a two way ticket for himself. He was certain he would return alone. Did you answer this riddle correctly?
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The victim was in a convertible. He was shot when the top was down. Did you answer this riddle correctly?
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The police did not tell him the location of the crime scene but he arrived at the correct place. Did you answer this riddle correctly?
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It was the manager because the mail does not come on Sundays. Did you answer this riddle correctly?
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He is smuggling bicycles.
Did you answer this riddle correctly?
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The president Did you answer this riddle correctly?
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Because his night watchman was sleeping on the job. Did you answer this riddle correctly?
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A capital offense. Did you answer this riddle correctly?
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Actutally, the name of that boy is "Shut Up," and he is playing hide-and-seek with two of his friends who are named "Manners" and "Trouble". "Trouble" is the one who counted and he is looking for the other two boys. "Manners" is hiding up in the tree. Did you answer this riddle correctly?
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