The ping pong balls cost 10000 * .10 = $1000. So the discount is 1000 * .30 = $300. So he pays 1000 - 300 = $700.is the reasoning for what question and answer pair?
Q: Ping pong balls sell for $.10 each. Johnny buys 10000 for a prank. He gets a 30% discount for buying in such large bulk. How much does he pay?
A: 700