Problema Solution

A donation box contains consisting of dimes and quaters. The number of dimes is 4 more than twice the number of quarters. If the total value of the coins is 2.65, how many coins of each type are there

Answer provided by our tutors

1 dime = 10 cents
1 quarter = 25 cents 

Let

d = number of dimes

q = number of quarters

d = 4 + 2q

10d + 25q = 265

........

click here to see the system of equations solved for d and q

........

d = 14 dimes

q = 5 quarters

There are 14 dimes and 5 quarters.