Cost Of The Stopper

Riddle: If a stopper and a bottle cost $2.10 and the bottle costs $2.00 more than the stopper. Then what does the stopper cost?

Answer: Five Cents.

Source: https://www.riddles.com/index.php/482

If a stopper and a bottle cost $2.10 and the bottle costs $2.00 more than the stopper.
Then what does the stopper cost? — Cost of the Stopper by Anonymous v1.

Riddle: If a stopper and a bottle cost $2.10 and the bottle costs $2.00 more than the stopper.
Then what does the stopper cost? Answer: Five Cents. — by Anonymous v2.