Question

a man travel a certain distance by bus in 1 hour and 30 minutes at the rate of 40 km per hour .how much time will he take to cover the same distance ,,if the speed of the bus is increased to 45 km per hour . please please do it for me​

Answer 1

Speed Of Bus=40 km/h

Time=1 hour 30 minutes.

30 minutes in Hour=30/60=0.5 hours.

Time=1+0.5=1.5 hours.

MEANS Speed=40 km/h

Time=1.5 hours.

Distance=Speed×Time

=40×1.5

=60 km

We know Distance=60 km

Now If Bus speed =45 km/h

Distance=60 km

Time=Distance/Speed

=60/45

=4/3 hours

In Mixed Fraction

=1 1/3

MEANS 1 hour 1/3 of hour

1 hour=60 min

1/3=1/3×60=20 minutes

Time=1 hour 20 minutes

$\boxed{\mathbf{Time=1\:hour\:20\:minutes}}$

Answer 2

Answer:

1 Hr 20 Mins

Step-by-step explanation:

1.in 60 mins person covers 40 Km

2. in 90 Mins how much Answer 60 Km

3. For same distance if speed increases by 45 Km per Hr

4. for 45 Km takes 60 Mins

5. then 60 Km how much

Answer is 80 Mins  ie  1 Hr 20 Mins