it's  kind of a general knowlege question.
in Word Problem Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

If the numbers are 15a and 15b then 15(a+b)=15ab, where a and b have no factors in common, therefore a+b=ab and a=b/(b-1). If b=4, a=4/3 and the numbers are 15a=20 and 15b=60. If b=6, a=6/5 and the two numbers are 18 and 90. If a=b=2 both numbers are 30. But none of these pairs has an HCF of 15.

by Top Rated User (804k points)

Related questions

Welcome to, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
85,849 questions
91,601 answers
15,993 users