Question

Jaidev takes 2 1/5 minutes to walk across the school ground. Rahul takes 7/4 minutes to do the same. Who takes less time and by what fraction?​

Answer 1

Answer:

Rahul,9/20

Step-by-step explanation:

11/5 , 7/4 means :-

44/20, 35/20

So, Rahul takes less time by 9/20

Answer 2

Rahul takes less time by $\dfrac{9}{20}\ minutes$

Step-by-step explanation:

Since we have given that

Number of minutes walk by Jaidev = $2\dfrac{1}{5}=\dfrac{11}{5}\ minutes$

Number of minutes walk by Rahul = $\dfrac{7}{4}\ minutes$

We need to compare both:

l.c.m of 5 and 4 = 20

So, it becomes,

$\dfrac{11\times 4}{5\times 4}=\dfrac{44}{20}\ minutes$

and

$\dfrac{7}{4}\times \dfrac{5}{5}=\dfrac{35}{20}\ minutes$

So, Rahul takes less time to walk, by

$\dfrac{44-35}{20}=\dfrac{9}{20}\ minutes$

Hence, Rahul takes less time by $\dfrac{9}{20}\ minutes$

# learn more:

Jaidev takes 2 1/5 minutes to walk across the school ground . Rahul takes 7/4 minutes to do the same.Who takes less time and by what fraction

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