HCF and LCM of fractions

To find the HCF and LCM of several fractions:

Step 1: First express the fractions in their lowest terms.

Step 2: HCF = HCF of Numerator / LCM of denominator

Step 3: LCM = LCM of Numerator/ HCF of denominator



 Question:

The circumference of the fore wheels and hind wheels of a carriage are 2²/₅ and 3 ³/₇ feet respectively. A chalk mark is made at the point of contact of the wheels with the ground at any given point. How far will the carriage have traveled so that their chalk marks may be again on the ground at the same time?