Last Maths Problem – PLEASE HELP THANKS?

The highest common factor of 3 numbers is 15. The least common multiple of the same three numbers is 90. What are the three numbers?

Top 1 Answers

A few days ago

Anonymous

Favorite Answer

HCF = 15

LCM = 90

since the HCF is in the LCM (of course!),

divide 90 by 15 = 90/15 = 6

6= 2 x 3

since 15 is the highest factor, every number needs to be bigger or equal to 15.

2 x 15 = 30

3 x 15 = 45

this is the two compulsary numbers, the next one can be 15.

ans: 30 , 45 , 15

~the end~

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