Mathematics, 20.02.2021 07:50 ridjebeberjejej7502

Adam made note of all the bicycles and cars he could see parked or locked on a certain city block. All the cars had exactly four wheels, and all the bicycles had exactly
two wheels. How many wheels were on the block if there were 15 bicycles and 7 cars?
How many wheels were on the block if there were x bicycles and y cars?

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Adam made note of all the bicycles and cars he could see parked or locked on a certain city block....