Question

There is a square path around a sport field. Ram takes 21 minutes to walk one round of the field & his friend shyam takes 15 min. for the same. Suppose they both start from the same point at the same time & go in the same direction. After how many min. will they meet again at the starting point? In this time, how many rounds has shyam taken​

Answer 1

Answer:

.......................

Answer 2

Answer: 105 min

Step-by-step explanation:

Given,

ram takes 21 minutes to walk one round of the field.

Whereas,

shyam takes 15 minutes for the same.

Factorization of 21: - 3 × 7

Factorization of 15 : - 3 × 5

Therefore, LCM of 21 and 15 =

3 ×7 × 5 = 105 minutes.

Therefore, after 105 minutes ( i.e. 1 hour 45 mins ) they will meet again at the starting point!

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