Question

a car running at 45 km/hr takes 6 hrs to covera journey. at what speed must it travel to complete the journey in 5 hrs.​

Answer 1

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★ ɢɪᴠᴇɴ :-

a car running at 45 km/hr takes 6 hrs to covera journey. at what speed must it travel to complete the journey in 5 hrs.

★ ᴛᴏ ғɪɴᴅ :-

What speed must it travel to complete the journey in 5 hrs ?

★ sᴏʟᴜᴛɪᴏɴ :-

Speed of car = 45 km/hr

Time = 6 Hr

Distance = Speed × time

= 45 × 6

= 270 km

Now, time = 5 hrs

Distance = 270 km

New Speed = Distance / time

= 270 / 5 km/hr

= 54 km/hr

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Answer 2

Given:-

• Speed = 45 km/hr
• Time = 6 hrs

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To find:-

• Speed must it travel to complete the journey in 5 hrs.

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Solution:-

★ Firstly, find the distance:-

Formula used

$\star{\boxed{\sf{\orange{Distance = Speed \times time}}}}$

$\large{\tt{\longmapsto{Distance = 45 \times 6}}}$

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$\large{\tt{\longmapsto{270\: km}}}$

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★ Now, find the speed:-

Formula used

$\star{\boxed{\sf{\orange{Speed = \dfrac{Distance}{time}}}}}$

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$\large{\tt{\longmapsto{Speed = \dfrac{270}{5}}}}$

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$\large{\tt{\longmapsto{Speed = 54\: km/hr}}}$

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Hence, the speed is 54 km/hr.

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