Question

Jaidev takes 2 3/5 minutes to walk once around a circular park. If he maintains the same speed, then how many rounds will he make 9 1/10 minutes

Answer 1

Answer:

7/2

Step-by-step explanation:

2 3/5 = 13/5

9 1/10 = 91/10

(91/10)/(13/5) = 7/2

Answer 2

Answer:

The number of  rounds he walks with $9\frac{1}{10}$ minutes = $3\frac{1}{2}$ rounds

Step-by-step explanation:

Given,

Jaidev takes  $2\frac{3}{5}$ minutes to walk once around a circular park.

To find,

The number of rounds he walks with $9\frac{1}{10}$ minutes.

Solution:

Let the distance traveled by the Jaidev to walk one round of the circular track = x units

Recall the concepts

Speed = $\frac{distance }{time}$

Jaidev takes  $2\frac{3}{5}$ minutes to walk once around a circular park.

Distance covered in  $2\frac{3}{5}$ minutes = x units

Speed= $\frac{distance }{time}$ =$\frac{x}{2\frac{3}{5} } = \frac{x}{\frac{13}{5}} = \frac{5x}{13}$ units

To find the number of rounds he makes with $9\frac{1}{10}$ minutes with the same speed.

That is we need to find the distance traveled by him in   $9\frac{1}{10}$ minutes with speed $\frac{5x}{13}$

Distance traveled = speed × time

=  $\frac{5x}{13}$× $9\frac{1}{10}$

= $\frac{5x}{13}X\frac{91}{10}$

= $\frac{7x}{2}$

= $3\frac{1}{2} x$

Since 'x' is the distance covered in one round of the circular track, the distance traveled in  $9\frac{1}{10}$ minutes = $3\frac{1}{2}$ rounds

∴The number of  rounds he walks with $9\frac{1}{10}$ minutes = $3\frac{1}{2}$ rounds

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