Some part of a journey of $555 k m$ was completed by a car with speed $60 k m / h$ . Then the speed is increased by $15 k m / h$ and the journey is completed. If it takes $8$ hours to reach, find the time taken by $60 k m / h$ speed.

11

No worries! We‘ve got your back. Try BYJU‘S free classes today!

8

No worries! We‘ve got your back. Try BYJU‘S free classes today!

13

No worries! We‘ve got your back. Try BYJU‘S free classes today!

3

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is C $3$
Let time taken to cover some distance with $60$ km/hr be $t$ .
Then, $t (60) + (8 - t) (75) = 555$
$\Rightarrow 75 \times 8 - 15 t = 555$
$\Rightarrow 600 - 555 = 15 t$
$\Rightarrow t = 3$ hours
Distance $=$ $3 \times 60 = 180$ km
Therefore, the time taken by $60$ km/hr speed is $3$ hours.

Suggest Corrections

Similar questions

Q. A car travelling at a speed of

60

km/h takes

15

hours to complete a journey. What will be the time taken to complete the same journey by a train whose speed is

90

km/h?

Q. A car can reach a certain place in

12

hours at the speed of

60 k m / h r

. By how much should the speed be increased so that it completes the journey in

10

hours ?

By travelling at a speed of $48 k m / h$ , a car can finish a certain journey in $10$ hours. To cover the same distance in $8$ hours, the speed of the car should be

Out of $1900 k m$ , Vishal travelled some distance by bus and some by aeroplane. Bus travels with average speed $60 k m / h r$ and the average speed of aeroplane is $700 k m / h r$ . It takes $5$ hours to complete the journey. Find the distance, Vishal travelled by bus.

Q. A car travels

100 k m

at a speed of

60 k m / h

and returns with a speed of

40 k m / h

. Calculate speed for the hole journey.

Join BYJU'S Learning Program

Some part of a journey of 555 km was completed by a car with speed 60 km/h. Then the speed is increased by 15 km/h and the journey is completed. If it takes 8 hours to reach, find the time taken by 60 km/h speed.

The correct option is C 3Let time taken to cover some distance with 60 km/hr be t.Then, t(60)+(8−t)(75)=555⇒75×8−15t=555⇒600−555=15t⇒t=3 hoursDistance = 3×60=180 km Therefore, the time taken by 60 km/hr speed is 3 hours.

Some part of a journey of $555 k m$ was completed by a car with speed $60 k m / h$ . Then the speed is increased by $15 k m / h$ and the journey is completed. If it takes $8$ hours to reach, find the time taken by $60 k m / h$ speed.