Question

The product of two number is 75 and their LCM 15. What is the HCF?

Answer 1

LCM ,× HCF = product

15 × HCF = 75

HCF = 75/15

HCF = 5

Answer 2

Step-by-step explanation:

let the numbers be a , b

let a = to 5 x and b = to 5y.x,y do not have a common factors other than 1

a*b=LCM*HCF=75*5=375

25xy=375

xy15=3*5

x = 3, y =5

the the numbers are 15, 25

edit -

as as suggested in one of the answers given by others,

another chioce is x=15 and y

then the two numbers are 75 , 5.