I Pulled 12 coins out of my pocket that equaled $1.67. The number of pennies equals the number of nickels. The number of nickels added to the number of dimes equals the number of quarters. How many of each coin did I find?

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.