The Fore wheel and the Rear wheel problem

Algebra Level pending

The fore wheel of a carriage makes 6 revolutions more than the rear wheel in going 120 m. If the diameter of the fore wheel be increased by 1/4 its present diameter and the diameter of the rear wheel be increased by one-fifth of its present diameter , then the fore wheel makes 4 more revolutions than the rear wheel in going the same distance. Find the circumference of each wheel in the carriage

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