Question : The ratio of the two numbers is 4 : 5, and their HCF is 3. What is their LCM?

Option 1: 48

Option 2: 80

Option 3: 60

Option 4: 36

Question : The LCM and HCF of the two numbers are 1105 and 5. If the LCM is 17 times the first number, then find the two numbers.

Option 1: 65 and 85

Option 2: 55 and 85

Option 3: 65 and 75

Option 4: 60 and 80

Question : Two numbers are in the ratio 3 : 4. The product of their HCF and LCM is 2700. The sum of the numbers is:

Option 1: 60

Option 2: 105

Option 3: 15

Option 4: 45

Question : If the sum of two numbers is 60 and their HCF and LCM are 5 and 60, respectively, then the sum of the reciprocals of the numbers will be:

Option 1: $\frac{1}{11}$

Option 2: $\frac{1}{6}$

Option 3: $\frac{1}{4}$

Option 4: $\frac{1}{5}$

Question : If the LCM of two numbers a and b is 60 and their HCF is 15. Determine their mean proportion.

Option 1: 30

Option 2: 25

Option 3: 60

Option 4: 4