1.

Five water taps of the same diameter can fill a tank in 40 hours. How many taps of the samediameter can fill the tank in 25 hrs.​

Answer»

Answer:

Solution: Let us assume, speed of TRAIN = x

We know; time = distance/speed

In case of normal speed;

t

=

360

x

In case of increased speed;

t

−

1

=

360

x

+

5

Or,

t

=

360

x

+

5

+

1

From above equations;

360

x

=

360

x

+

5

+

1

Or,

360

x

=

360

+

x

+

5

x

+

5

Or,

360

x

+

1800

=

x

2

+

365

x

Or,

x

2

+

5

x

−

1800

=

0

Or,

x

2

+

45

x

−

40

x

−

1800

=

0

Or,

x

(

x

+

45

)

−

40

(

x

+

45

)

=

0

Or,

(

x

−

40

(

x

+

45

)

=

0

x = 40 and x = - 45

Discarding the NEGATIVE value; we have speed of train = 40 km/h

I HOPE it's helpful to you ❤️❤️❤️


Discussion

No Comment Found

Related InterviewSolutions