Question

Find the LCM of 25/7, 15/28, 20/21?.

• A. $$\frac{300}{7}$$
• B. 300
• C. $$\frac{300}{23}$$
• D. 320

Answer 1

Answer:

$$\frac{300}{7}$$

$$LCM of $[\frac{25}{7},\frac{15}{28},\frac{20}{21}]$

$Is\frac{LCM OF[25,15,20]}{HCF of[7,28,21]}$

$=\frac{5[5,3,4]}{7[1,4,3]}$

$=\frac{60\times5}{7}$

$=\frac{300}{7}$