Math, asked by karan6710, 11 months ago

The ratio between the speeds of two trains is 7: 8. If the second train runs 440 kms in 4 hours, then the speed of the first train is: 

A.    47.4 km/hr


B.    57.19 km/hr


C.    68.13 km/hr


D.    96.25 km/hr

Answers

Answered by Blaezii
10

Answer :

Option => D.

=> 96.25 km/hr.

Step-by-step explanation:

Given :

The ratio between the speeds of two trains is 7: 8.

The second train runs 440 kms in 4 hours.

To Find :

The speed of the first train.

Solution :

We know that :

\bigstar\;\boxed{\sf Speed = \dfrac{Distance}{Time}}}

Put the given values :

Consider the -

Speed of the first train speed 1x and second 2x.

⇒ 2x = \dfrac{440}{4}

⇒ x = 13.75

⇒ 7 × 13.75

⇒ 96.25 km/hr.

The speed of the first Train is 96.25 km/hr. and Option => D is correct.

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