1.

Find the LCM Of 25/7, 15/28, 20/21.1). 300/72). 3003). 320/234). 320

Answer»

LCM of 7, 28, 21 = 84

 25/7 = (25 × 12)/(7 × 12) = 300/84

15/28 = (15 × 3)/(28 × 3) = 45/84

20/21 = (20 × 4)/(21 × 4) = 80/84

Now LCM of (300/84, 45/84, 80/84) = LCM(300,45,80)/84 = 3600/84 = 300/7


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