35 is added to a mystery number. The result is multiplied by 4. After that 47 is subtracted. The final value is 373. What is the mystery number at the beginning?
Question
35 is added to a mystery number. The result is multiplied by 4. After that 47 is subtracted. The final value is 373. What is the mystery number at the beginning?
Solution
To find the mystery number, we need to reverse the operations in the opposite order they were applied.
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Add 47 to 373 (because subtraction was the last operation in the original problem). This gives us 420.
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Divide 420 by 4 (because multiplication was the second operation in the original problem). This gives us 105.
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Subtract 35 from 105 (because addition was the first operation in the original problem). This gives us 70.
So, the mystery number is 70.
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