Question

average speed of car is 20 km per hour more than average speed of bus if car takes for a resident was to cover a distance of 300 km find average speed of car and bus​

Answer 1

Answer:

Step-by-step explanation:

Let b be the speed of the bus. Then the car is b+20. So:

300/b - 4=300/b+20

300(b+20) -4b²-80b=300b

4b²+80b-6000=0

b²+20b-1500=0

(b+50)(b-30)=0

b=30

Answer 2

$300 \div 20$

=15