Out of 40 coins, 16 are dimes. half of the remaining coins are quarters and the rest are pennies and nickels. there are 2 nickels for every penny. how many pennies are there?

Number of pennies and nickels = 40 - 16 - 1/2(24) = 12

So there are 8 nickels and 4 pennies

Answer 4 pennies

It's like discovering the answer to a puzzle. the purpose in solving an equation is to find the value or values of the variable that makes it a true statement. any value of the variable that makes the equation true is called a solution to the equation.