Kat has 30 vehicles. Some are bicycles and some are cars. These vehicles have a total of 88 wheels. How many bicycles are there?
C+B=30
4C+2B=88
28
To determine the number of bicycles, you need to first know that cars have 4 wheels and bicycles have 2 wheels. Let's assume the number of bicycles as 'x'.
Since Kat has a total of 30 vehicles, the number of cars would be 30 - x.
Now, to calculate the total number of wheels, you need to add up the number of wheels each type of vehicle has:
Number of wheels contributed by bicycles: 2 * x
Number of wheels contributed by cars: 4 * (30 - x)
The total number of wheels is given as 88. So, you can set up the equation:
2 * x + 4 * (30 - x) = 88
Now, you can solve this equation to find the value of 'x', which represents the number of bicycles.