Question

There are 19 bicycles and tricycles in a store there are 45 wheels how many are bicycles and how many are tricycles

Answer 1

Answer:

The number of bicycles is 12 and the number of tricycles is 7

Step-by-step explanation:

Let

x ----> the number of bicycles

y ---> the number of tricycles

we know that

There are 19 bicycles and tricycles in a store

so

$x+y=19$ -----> equation A

There are 45 wheels

Remember that a bicycle has two wheels and a tricycle has three wheels

so

$2x+3y=45$ ----> equation B

Solve the system by graphing

The solution is the intersection point both graphs

using a graphing tool

The solution is the point (12,7)

see the attached figure

therefore

The number of bicycles is 12 and the number of tricycles is 7