a scooter covers 20km/h at a uniform speed of 30km/h what should be its speed for the next 40 km - Maths - Linear Inequalities

Question

a scooter covers 20km/h at a uniform speed of 30km/h what should
be its speed for the next 40 km if the average speed is 60km/h

Varun.Rawat · Accepted Answer

Total distance travelled by the car = 20 km + 40 km = 60 km

speed by which first 20 km is covered = 30 km/hrtime taken to cover
first 20 km = distance speed = 2030 = 23 hr Let v be the speed of
car to cover next 40 km Time taken to cover next 40 km =
distancespeed = 40v hr Average speed = 60 km/hr⇒total
distance travelledtotal time taken= 60⇒6023 + 40v =
60⇒602v + 1203v = 60⇒60 × 3v2v + 120 =
60⇒3v = 2v + 120⇒v = 120 km/hr

a scooter covers 20km/h at a uniform speed of 30km/h what should be its speed for the next 40 km if the average speed is 60km/h