NTT Data Time , speed and Distance Quiz -1

40 \times \frac{18}{5} = 144 km\hr

We know Speed is directly proportional to Distance so the ratio will be the same. So it will be 4:11

Speed = \frac{Distance}{Time} = \frac{81}{9} = 9 km/hr

 

Let Distance = x km

Average Speed = \frac{\text{Total Distance}}{\text{Total Time}}

Average Speed =\frac{x+x}{\frac{x}{10}+\frac{x}{30}} = 15km/hr

 

54\times \frac{5}{18} = 15 m/sec

Time Required = \frac{900}{15} = 60 sec

Circumference of Equilateral Triangle = 3 x side = 3 x 10 = 30 metre

He travel thrice so total distance = 30 x 3 = 90 m

Speed = \frac{90}{20} = 4.5 m/sec

If Speed is constant then Time is directly proportional to the distance

So New Time Required = 4\times 2 = 8 hours

1 km = 1000m

7.2 km = 7.2 x 1000 = 7200 mètre

 

Speed of Mina = \frac{Distance}{Time} = \frac{120}{3} = 40[/latex] m/sec

Puja Speed = \frac{7}{5} \times 40 = 56 m/sec

Let Distance between her home and Bank = x m

According to Question

\frac{x}{20} - 10 = \frac{x}{30} + 12

\frac{x}{20} -  \frac{x}{30} = 10 + 12

\frac{3x-2x}{60} = 22

X = 60 x 22 = 1320 meters