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Problem: If 7/8 of a number is 3-1/2 more than 3/4 of the same number, what is the number?
Solution: The difference between 7/8 times of a number and 3/4times of a number is 7/8 – 3/4 = 1/8 times of the number.
1/8 of the number is 3-1/2
∴ That number is 3-1/2 X 8 = 7/2 X 8 = 28