Post a New Question

math

posted by .

how many dimes and quarters does jill have if she has $9.90 in dimes and quarters and she has 3 times as many dimes as quarters?

  • math -

    D = 3Q

    10D + 25Q = 990

    Substitute 3Q for D in second equation and solve for Q. Insert that value into the first equation and solve for D. Check by inserting both values into the second equation.

Answer This Question

First Name
School Subject
Your Answer

Related Questions

More Related Questions

Post a New Question