Answer:
4000
Step-by-step explanation:
40% of the number is 15% more of the number than 15% of the number is. So, 600 is 15% of the number.
600 = 0.15n
600/0.15 = n = 4000
The number is 4000.
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Check
40% of 4000 is 1600. 25% of 4000 is 1000. 1600 is 600 more than 1000.