Question

Amir and Summit travelled for 4 hours respectively. If the ratio of the distance covered by Amir and Summit was 17:7, where the speed of Amir was 85km/hr. What was the speed of Summit?​

Answer 1

Answer:

The distance travelled in an hour by a certain object is called the speed of the object.

Distance travelled by Hamid in one hour=9km

Distance travelled by Akhtar in one hour=12km

Hamid's speed=9km/hr

Akhtar's speed=12km/hr

Ratio of speed of Hamid to the speed of Akhtar=9/12

=3/4.

Answer 2

Answer:

The speed of summit is 35km/hr.

Step-by-step explanation:

Given the total time of travelling of amir and summit,  t = 4 hours

The ratio of the distances covered by Amir and Summit is 17:7

The speed of amir = 85km/hr.

Let the speed of summit be x km/hr.

Ratio of distances covered by amir and summit can also be written as

$\dfrac{17}{7}$

Similarly, the ratio of speeds by amir and summit can be written as

$\dfrac{85}{x}$

Since both the ratios are in proportion, equating both,

$\dfrac{17}{7} =\dfrac{85}{x}$

$\implies 17\times x=85\times 7$

$\implies x =\dfrac{85\times 7}{17}=5\times 7=35km/hr$

Therefore, the speed of summit is 35km/hr.

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