SOLUTION: A preschool playground has both bicycles and tricycles. There is a total of 30 seats and 70 wheels. How many bicycles are there? How many tricycles are there? I already know: Se

Question 823798: A preschool playground has both bicycles and tricycles. There is a total of 30 seats and 70 wheels. How many bicycles are there? How many tricycles are there? I already know:
Seats: b+t=30
Wheels: b(2) + t(3) = 70. Just not 100% sure how to solve.
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
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x + y = 30
2x + 3y = 70
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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answer:
x= bikes = 20
y= tricycles = 10
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Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
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Solve quadratic equations, quadratic formula:
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Solve systems of linear equations up to 6-equations 6-variables:
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