And how would a European be expected to know how much nickles and dimes are worth? Luckily it's (a) so that's not a problem.
I suspect she had a teacher who believed in the, unfortunately self-fulfilling, "girls can't learn math" myth, which results in girls being rewarded for acting dumber than they really are with much wasted potential as a result.
Reductionist and proud of it.
Being ignorant is not so much a shame, as being unwilling to learn. Benjamin Franklin
Chase after the truth like all hell and you'll free yourself, even though you never touch its coat tails. Clarence Darrow
A person who won't read has no advantage over one who can't read. Mark Twain