Question

what is LCM of 30 and 40​

Answer 1

Answer:

120

Step-by-step explanation:

LCM of 30,40

= 2 (30,40)

     ( 15,20)

     ( 15,10)

     ( 15,5)

= 3 ( 15, 5)

     (  5,5)

= 5 ( 5, 5)

= 5 ( 1, 1)

So LCM of 30,40 = 2^3x3x5

=8x3x

=24x5

=120

Therefore the LCM Of 30,40 = 120

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Answer 2

Answer:

LCM of  $30,40$ is $120$.

Step-by-step explanation:

Given : Numbers are $30,40$.

To find : LCM of given numbers.

Solution :

• The given numbers are $30,40$.
• We have to find the LCM of given numbers.
• LCM is the least common multiple of the given numbers.
• To find LCM of  $30,40$, we have to first check the least or smallest multiple that is common for both the given numbers.
• Multiples of $30 = 30,60,90,120,150,180$ and so on.
• Multiples of $40=40,80,120,160,200,240$ and so on.
• We can see that the least common multiple of  $30,40$ is $120$.
• ∴ LCM of  $30,40$ is $120$.