The respective ratio between the speed of a bike, a van and lorry is 3 : 5 : 2. The speed of the van is 250 percent of the speed of the lorry which covers 360 km in 12 hours. What is the average speed of the bike and the van together?
A) 60 kmph B) 62 kmph C) 64 kmph D) 63 kmph
Answers
Answered by
0
A) 60 kmph
pls mark as brilliant
Answered by
0
Step-by-step explanation:
The ratio is 3:5:2
Speed of lorry is 360km in 22hrs
=30km/hr
Speed of van is 250% of the speed of the van
= (250/100)×30
=75km/hr
Now for Speed of Bike(X)
we know that 3 : 5 : 2 = X : 75 : 30
from here X=45
(see 75 and 30 both comes in the table of 15, 15×5=75; 15×2= 30 ; so, 15×3= X=45)
Therefore,
Speed of bike=45
The average speed of bike and van together
= (45+75)/2
= 120/2
=60km/hr
Ans: A)60kmph
Similar questions