Question

In a car park, there are motorcycles, 4-wheeled cars, and 6-wheeled trucks. There are 20 cars and 15 trucks. If there are 250 wheels altogether, how many motorcycles are there in the car park?

Answer 1

No of tyres of cars=20×4=80 tyres
No of tyres of truck=15×6=90
No of tyres of motorcycles=250-(80+90)=250-170=80tyrs
No of motorcycles=80/2=40 bikes

Answer 2

Hope this Helps!

Total Number of car wheels = 4*20= 80 Wheels

Total Number of truck wheels= 6*15= 90 wheels

total Number of wheels (excluding motorcycle wheels)= 170 wheels

Number of bike wheels = Total number of wheels- no of car and truck wheels= 250-170= 80

Now, bikes have 2 wheels, however there are three wheeled bikes called trikes (lol!)

Let's assume that the bikes in this parking lot has two wheels.

Therefore, total number of bikes = Number of wheels/ no of wheels on each bike= 80/2 is 40

So therefore, there are 40 bikes.