If you take a certain number 2.5 times then add 1.75 and divide the result by 0.8, you’ll get 37.5. What was the original number?

Question

If you take a certain number 2.5 times then add 1.75 and divide the result by 0.8, you’ll get 37.5. What was the original number?

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Answers ( No )

    0
    2021-09-09T17:26:34+00:00

    Answer:

    The original number is 11.3

    Step-by-step explanation:

    I don’t remember how i did it nor how to explain it

    0
    2021-09-09T17:27:11+00:00

    Answer:

    The original number is 11.3

    Step-by-step explanation:

    Let the number is x and then we form the equation to solve it for the value of x.

    1- Number is multiplied by 2.5 then it becomes = 2.5x

    2- Then we add 1.75 to the expression then new expression will be = 2.5x + 1.75

    3- We divide the result by 0.8 then expression will be = \frac{2.5x + 1.75}{0.8}

    4- Now the final expression is equal to 37.5 so the equation will be

    \frac{2.5x + 1.75}{0.8} = 37.5

    Now we multiply 0.8 in both the sides of the equation

    \frac{2.5x + 1.75}{0.8}×0.8 = 37.5×0.8

    2.5x + 1.75 = 30

    2.5x = 30 – 1.75

    2.5x = 28.25

    x = 28.25/2.5 = 11.3

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