A rectangular field is 150 m×60m.two cyclists karan and vijay start together and can cycle at speed of 21m/min and 28 m/ min, respectively. They cycle along the rectangle track ,around the field from the same point and at the same moment. After how many minutes will they meet again at the starting point
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Step-by-step explanation:
Given:L= 150m, B= 60m Speed of 1st cyclist= 21m/min Speed of 2nd cyclist = 28 m/min Distance travelled = perimeter of the field Perimeter of the field = 2 ( L+ B)= 2(150+60)= 420m Distance travelled = 420 m Time taken by 1st cyclist= distance / speed = 420/21 min Time taken by 2nd cyclist = 420/28 min Next time both the cyclists will meet at 420/7 = 60 minutes ( by taking HCF of denominator: HCF of 21 & 28 is 7).
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both will take 60 minutes
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