The highest common factor of two numbers is 13 and their least common multiple is 455. If the numbers do not differ by more than 60, what is the total of the two numbers?

Correct answer marked below

A

14

B

38

C

40

156

Correct

E

190

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Official Explanation

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Given that the GCD of the two numbers is 13, it follows that both numbers are multiples of 13. The sum of two multiples of 13 will…

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S

SuraiyaJun 19, 2024

Any shortcuts for solving this faster?

A

ArinFeb 10, 2025

cheers!

What this question tests

Your understanding of divisibility rules, least common multiples, and greatest common factors.

Forgetting that 1 is not prime and that every integer divides 0.

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