You are choosing a book from your friend’s book collection. You can choose 1 of 6 science fiction books, 1 of 2 mystery books, o
2 answers:
You might be interested in
So.. let's say, the amount of dimes is "d" and nickels is "n" and quarters is "q"
"<span>She returned 9 more dimes than nickels", so.. whatever "n" is, "d" is 9 more than that, or d = n + 9
"</span><span>twenty-one more quarters than dimes", so, whatever "d" is, "q" is 21 more than that, or q = d + 21
we know, she was just changing the $10, so all nickels and dimes and quarters will add up to 10
thus </span>
solve for "d", to see how many dimes she gave
what about quarters? well, q = d + 21
and nickels? well, d - 9 = n
"<span>She returned 9 more dimes than nickels", so.. whatever "n" is, "d" is 9 more than that, or d = n + 9
"</span><span>twenty-one more quarters than dimes", so, whatever "d" is, "q" is 21 more than that, or q = d + 21
we know, she was just changing the $10, so all nickels and dimes and quarters will add up to 10
thus </span>
solve for "d", to see how many dimes she gave
what about quarters? well, q = d + 21
and nickels? well, d - 9 = n