Question

a car covers a distance of 240km with some speed . ifthe speed is increased by 20km/hr,it will cover the same distance In 2hr less find the speed of car

Answer 1

SPPEED OF CAR WILL BE:-
AS,20*2=40km
THEN 240/40
=4km
AFTER THIS 40km/hrs WILL BE SUBTRACTED BY 2
THEN ANSWER WILL BE 40-2=38km
HENCE THE SPEED WILL 38km/HRS AFTER INCREASING 20km/hr

Answer 2

Answer:

Lets assume speed =20 and time = t

So distance = speed x time ,

240 =20t, first condition.

Now speed is increased by 20 eg +20

and time reqd. is 2hr less.

So 240 = (20+20)(t-2),

240 = 40t-80,

t= 8,

So initial speed will be 240÷8,

Speed = 30km/hr

Tks. . . Rajiv

After solving this it will give u d time t=8,

Step-by-step explanation: