### Brain Teasers

# Kidstuff

Bicycles, tricycles, pedal cars galore

Some have 2 wheels, some 3, some 4

One each they belong to some girls and boys

Eighteen is the number of these toys

If I change 1 tyre a week I fear

To change them all will take me a year

There are half as many cars as trikes

How many of each are owned by these tykes?

Some have 2 wheels, some 3, some 4

One each they belong to some girls and boys

Eighteen is the number of these toys

If I change 1 tyre a week I fear

To change them all will take me a year

There are half as many cars as trikes

How many of each are owned by these tykes?

### Hint

How many weeks are there in a year?### Answer

Suppose there is 1 car. There are 2 tricycles and 15 bikes. This makes 40 wheels - not enough.Suppose there are 2 cars. There are 4 tricycles and 12 bikes. This makes 44 wheels.

Each time I add 1 car I get 4 extra wheels. I need 52 wheels so I want 2 more cars.

Answer 4 cars, 8 tricycles and 6 bikes.

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