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1. A motorist takes 30 mins to complete a journey when he travels at 60km/h. How long will it'
take to cover the same distance at 50 km/h?

Sagot :

devishri1977

Answer:

36 minutes

Step-by-step explanation:

Distance ,  speed and time:

 Speed = 60 km/hr

 time = 30 mins = 30/60 = 1/2 hour

 [tex]\sf \boxed{\bf Distance =speed * time}[/tex]

                   [tex]\sf = 60 * \dfrac{1}{2}\\\\ = 30 \ Km[/tex]

Distance = 30 km and speed = 50 km/hr

    [tex]\sf \boxed{\bf Time =\dfrac{Distance}{speed}}[/tex]

               [tex]\sf = \dfrac{30}{50}\\\\=\dfrac{3}{5} \ hour\\\\=\dfrac{3}{5}*60\\\\= 3*12\\\\= 36 \ minutes[/tex]

saadatk

Answer:

0.6 hours

Step-by-step explanation:

• First calculate the distance travelled at 60km/h:

distance = speed x time

              = 60  x  0.5

              = 30 km

• Now calculate the time taken at 50 km/h:

time = distance/ speed

       = 30 / 50

       = 0.6 hours

       = 0.6 x 60 min

      = 36 minutes

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