# Easy Number System Solved QuestionAptitude Discussion

 Q. The LCM of two numbers is 280 and their ratio is $7:8$. The two numbers are
 ✖ A. 70, 80 ✔ B. 35, 40 ✖ C. 42, 48 ✖ D. 28,32

Solution:
Option(B) is correct

Let the number be $7x$ and $8x$
HCF $= x$

Hence, $\text{HCF × LCM} = 7x × 8x$
⇒ $280x = 56 x×x$
⇒ $x= 5$
Thus numbers are 35 and 40.

## (3) Comment(s)

Terror
()

bro ,

7x=280

x=40;

8y=280

y=35;

SAUROJIT
()

7*P=280 ..=>P=40

8*Q=280..=>Q=35

Gopal
()

l.cm of 280=l.cm of the a,b(choose all the option and workout)

take l.c.m for 280 = 7*8*5

take each option and l.c.m