ive tried but i cant seem to get this one
Your piggy bank has 25 coins in it; some are quarters and some are nickels. You have $3.45. How many nickels do you have?

Question

ive tried but i cant seem to get this one 
Your piggy bank has 25 coins in it; some are quarters and some are nickels. You have $3.45. How many nickels do you have?

amistre64 · Answer

the total number of coins is distributed in some fashion between quarters and nickels

q + n = 25  is one equation we can use

amistre64 · Answer

some particular distribution of qs and ns equates to 3.45

q(.25) + n(.05) = 3.45

amistre64 · Answer

now this is a system of 2 equations with 2 unknowns; use whatever your happiest method is to solve

anonymous · Answer

thanks!!

amistre64 · Answer

youre welcome, and good luck ;)

anonymous · Answer

lol thanks!