谁能帮我翻释一下英语?

谁能帮我翻释一下英语?
WENDY:He was talking to Anne.At first i thought he was so mean.A real snob,you know?
SIMON:He's not,though.He said he barely got through school.He told me he did really badly at university.
WENDY:Well,he learned to run a company somewhere.He makes a ton of money.
SIMON:That's the thing.He said he was bad at maths.
WENDY:At what?
SIMON:Maths.
WENDY:You mean"math?"
SIMON:We say "maths"
WENDY:You must mean all the different maths.Because I mean the one basic math.
SIMON:Whatever.
SIMON:But Wendy,listen to this.He told me making money is easy.He said,"If I buy something for one dollar,and sell it for two,I make money from that one per cent difference.
WENDY:O ne per cent?You mean a hundred per cent.
SIMON:Right,The man can't figure a percentage to save his life.
WENDY:Tell me about it.You should see the tip he left me!