 Hi and how are you all? The question says Rafiq exercised for 3 by 6 of an R while Rohit exercised for 3 by 4 of an R. Who exercised for a longer time? Now in this question we need to find who exercised for a longer time. So let us start with our solution. Now here we have Rafiq and we have Rohit. Rafiq is exercising or Rafiq exercised for 3 by 6 of an R and Rohit exercised 3 by 4 of an R. Now we need to think which one of them is greater, 3 by 6 or 3 by 4. So we can do it by first of all having a common denominator that will be done by, we know that LCM of 6 and 4 is 12. So to make the denominator over here 12 and similarly over here also what we need to do we need to multiply the denominator by 2 that then only 6 multiplied by 2 will be 12 and hence we will be multiplying the numerator also by 2 which will make it 6 by 12. Whereas 4 multiplied by 3 is 12 therefore 3 multiplied by 3 will be 9. Since we are multiplying the denominator by 3 we need to multiply the numerator also by the same number. So now we need to decide which one of them is greater. It's 9 by 12 right. So we can say that in the or as our answer that 3 by 4 is greater than 3 by 6 that means Rohit exercised for a longer time right. So this was our required answer. I hope you understood the question well. Do convert your fractions properly and take care.