Best Answer

The least common multiple of 4 and 5 is 20. The least common multiple of 15 and 20 is 60. (Thus, the least common multiple of 4, 5, and 15 is 60.) Any multiple of 60 will also be a multiple of 4, 5, and 15.

Q: Which common multiple of 4 and 5 is also a multiple of 15?

Write your answer...

Submit

Still have questions?

Continue Learning about Basic Math

60 is the LCM of 4, 10, and 15, and is also the LCM for 4, 10, and 30

The LCM of 4, 9, and 15 is 144

a number is 6. All numbers divisible by both 4 and 15 are the multiples of 4 and 15. Since 4 and 15 have no prime factor in common (4 = 22, 15 = 3 · 5), then the least common multiple of 4 and 15 is equal to their product, namely 4 · 15 = 60. Every other multiple of 4 and 15 is divisible by 60. Thus, if 60 is divisible by a number then all the multiples of 4 and 15 are divisible by that number. Therefore, it is enough to check by which number in the given options is 60 divisible. Only 6 divides 60 and none of the other do. The answer must be (A).

The least common multiple (LCM) is often also called the lowest common multiple or smallest common multiple. Keep in mind that these different terms all refer to the same thing: the smallest positive integer which is a multiple of two or more numbers.The least common multiple of 4, 5, and 21 is 420.

The Least common multiple of 4 and 8 is 8.Since 8 is a multiple of 4, it is automatically the LCM.8it is the smallest common multiple between the two, despite also being the value of one of the two numbers.

Related questions

The Least Common Multiple of 15, 6, 4 is: 60

The least common multiple of the numbers 4, 15 and 36 is 180.

The Least Common Multiple (LCM) for 4 15 16 is 240.

The lowest common multiple of 4 and 15 is 60

The Least Common Multiple (LCM) of (4,6,15) is 60.

60 is the LCM of 4, 10, and 15, and is also the LCM for 4, 10, and 30

The lowest common multiple (LCM) is: 60

The Least Common Multiple (LCM) for 6 15 is 30.

1320

420

300

The LCM of 4, 12, and 15 is: 60