Question

please answer me this is math question it's easy for you but hard for me ​

Answer 1

Answer:

Main formula:

First Number x Second Number = HCF x LCM

a) 16

Second number = (HCF x LCM) / First number

Second number = (4 x 48) / 12 = 192 / 12 = 16

b) 60

LCM = (First number x Second number) / HCF

LCM = (15 x 20) / 5 = 300 / 5 = 60

c) 21

First number = (HCF x LCM) / Second number

First number = (7 x 42) / 14 = 294 / 14 = 21

d) 3

HCF = (First number x Second number) / LCM

HCF = (9 x 15) / 45 = 135 / 45 = 3