Post a New Question


posted by on .

A bag contains forty coins, all of them either 2c or 5c coins. Let there be x 2c coins and y 5c coins. If the value of money in the bag is $1.55, find the number of each kind.

  • Math - ,

    5x = 2y therefore

    x = 2/5y

    x + y = 155

    Substitute 2/5y for x in last equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the last equation.

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions

Post a New Question