Question

Jaidev takes 11/5 minutes to walk accross the school ground. Rahul takes 7/4 minutes to walk accross the school ground. Who takes less time and by what fraction?​

Answer 1

Answer:

Rahul takes less time , 9/20 minutes

Step-by-step explanation:

11/5 > 7/4 so, Rahul takes less time

11/5 - 7/4 =

(44-35)/20 =

9/20

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Answer 2

Answer:

Step-by-step explanation:

Time taken by Jaidev = \frac{11}{5}  

5

11

​  

 minutes

Time taken by Rahul = \frac{7}{4}  

4

7

​  

 minutes

Difference = \frac{11}{5}-\frac{7}{4}=\frac{\left(11\times4\right)-\left(7\times5\right)}{20}=\frac{44-35}{20}=\frac{9}{20}  

5

11

​  

−  

4

7

​  

=  

20

(11×4)−(7×5)

​  

=  

20

44−35

​  

=  

20

9

​  

 

Hence, Rahul takes \frac{9}{20}  

20

9

​  

 less time than Jaidev.