Question

10. The ratio between the speeds of two cars is 5:8. If the first car covers 200 km in 2 hours, find the speed of the second car.
O 160 km/hr
O 150 km/hr
O None of these
O 130 km/hr​

Answer 1

Speed of second car: 8x = 8×20 = 40km/h

Step-by-step explanation:

The ratio between the speeds of 2 cars is 5:8.

If first car runs200km in 2 hours .

Speed of second car :

Let:

The First car speed : 5x

The Second car speed : 8x

Speed Formula

The speed formula can be defined as the rate at which an object covers some distance. Speed can be measured as the distance traveled by a body in a given period of time. The SI unit of speed is m/s.

speed = distance/ time

According to the question:

for the first car :

5x= 200/2

x= 100/5

x= 20.

Hence ,

speed of first car : 5x = 5×20 = 100km/h

speed of second car: 8x = 8×20 = 40km/h

(#SPJ2)

Answer 2

Answer:

The speed of second car be  $160km/hr.$

Let  us consider two cars A and B.

Let the speed of car A $= V_{A}$

Let the speed of car B $= V_{B}$

It is given that,

$\frac{V_{A} }{V_{B} } = \frac{5}{8}$

$V_{A} = \frac{S_{A} }{T_{A} }$

$V_{A} = \frac{200km}{2hr}$

$V_{A = 100km/hr$

$V_{B} = \frac{8V_{A} }{5}$

$V_{B} = \frac{8* 100}{5}$

$V_{B} = 160km/hr$

Therefore,speed of second car  $=V_{B} = 160km/hr$

#SPJ3