Question 45

Two numbers are in the ratio 4 : 5 and their LCM is 100. What is their difference?

Solution

Let say, two numbers are 4k and 5k.

So, LCM(4k,5k)=20k.

So, 20k=100.

or, k=5.

So, Numbers are 20 and 25.

Their difference is 5.

B is correct choice.

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