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Finding the Increase or Decrease in Percent

If # denotes ...

Question

If # denotes +, % denotes -, * denotes X and @ denotes $\div$ then what is the value of 16 # 4 *5%72@9?

A

25

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B

27

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C

32

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D

28

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Solution

The correct option is D 28
We have
16 # 4 * 5 % 72 @ 9
After changing symbols, we get
16 + 4 x 5 - 72 $\div$ 9
= 16 + 4 x 5 - 8 = 16 + 20 - 8
= 36 - 8 = 28.

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