Question

Dennis thinks of a number. He adds 0.5 to that number and then multiplies the new result by 4.He then subtracts 2 and divided by 2. His final answer is 48.What number did Dennis start with?

Answer 1

$\textbf {Hey there, here is the solution.}$

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(1) Add 0.5 (The reverse is subtract 0.5)

(2) multiply by 4 (The reverse is to divide by 4)

(3) subtract 2 (The reverse is to add 2)

(4) divide by 2 (The reverse is to multiply by 2)

His final result is 48.

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To find the number that he started with, we will work backwards:

The final result is 48

4. multiply by 2: 48 x 2 = 96

3. add 2: 96 + 2 = 98

2. divide by 4: 98 ÷ 4 = 24.5

1. Subtract 0.5: 24.5 - 0.5 = 24

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Answer: The number Dennis is thinking of is 24.

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⭐$\textbf {Cheers}$⭐