Question

There are 20 bicycles and 10 cars parked in the parking lot. Each bicycle had two wheels and each car had four wheels. How many wheels are there in total?
Ummhhh, what is 20*2 + 10*4 ??

(on line * is used as a multiplication sign)
I already know that
Well, you didn't know what 20*2+10*4 was, so I assumed nothing.
And I opppp

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