Question

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

Answer 1

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).

Answer 2

both will take 60 minutes