Answer :
Final answer:
To find the original number, subtract 4 from 97.7 to find the doubled original number, then divide by 2.
Explanation:
To find the original number, we need to work backwards from the given information. If Sarah doubled the original number and added 4 to get 97.7, we can subtract 4 from 97.7 to find the doubled original number: 97.7 - 4 = 93.7. Now, we can divide 93.7 by 2 to find the original number: 93.7 ÷ 2 = 46.85. Therefore, the original number is 46.85.
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