Question

130 किलोमीटर यात्रा में एक व्यक्ति ने 80 किलोमीटर यात्रा
60 किलोमीटर प्रति घंटा तथा शेष दूरी 25 किलोमीटर प्रति घंटा
से तय की। व्यक्ति की औसत चाल किलोमीटर प्रति घंटा में होगी.
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Answer 1

Answer: किलोमीटर यात्रा में एक व्यक्ति ने

Step-by-step explanation:

Answer 2

Given:

Total distance= 130km

The first covered distance = 80 km and speed= 60km/hr

The second speed is = 25km/hr

To find:

average speed.

Solution:

Formula:

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

Second distance = total distance - first distance

Calculating the second distance:

Second distance = 130 -80

                             = 50 km

The second distance is 50 km, which covers in 25 km/hr

calculating covered time:

For the first distance:

$60=\frac{80}{Time}\\\\time=\frac{80}{60}\\\\time=\frac{4}{3} \ hour$

For the second distance:

$25=\frac{50}{time}\\\\time=\frac{50}{25}\\\\time= 2 \ hour$

calculating overall time:

$\ overall \ time=\frac{4}{3}+2$

                    $= \frac{4+6}{3}\\\\= \frac{10}{3} \ hour$

calculating  average speed:

$speed= \frac{130}{\frac{10}{3}}$

         $=\frac{390}{10}\\\\=39$

The average speed is 39 km/hr.