Question

- The distance between Kolhapur and Nashik can be covered in 6 hours at the speed of 77 km per hour. To cover the same distance in5 1/2 hours, by how much should the speed in km per hour be increased? ​

Answer 1

Answer:-

Given:

Time taken from Kolhapur to Nashik = 6 hr

Speed = 77 km per hour

To find:

Speed if the time taken is 30 minute less.

Distance between Kolhapur and Nashik = Speed × Time = 77 × 6 = 462 km

New time to cover 462 km = 6 hr - 30min = 6 - 1/2 = 11/2 hr

$New speed = \frac{462}{\frac{11}{2}}=\frac{462\times2}{11}=42\times2=84$

Therefore, New speed to cover 462 km in 30 minute less is 84 km per hr.

Answer 2

84

Distance between Kolhapur and Nashik=. =speed ×time.

=77×6=462

6 1/2 =11/2

462/11/2 =42×2