How many fives are equal in value to 15 twos?

To determine how many fives are equal in value to 15 twos, you need to compare the ratiOS of fives to twos. Since each five is worth 5 units and each two is worth 2 units, you can set up the equation 5x = 15(2), where x represents the number of fives. By solving for x, you find that x = 6. Therefore, 6 fives are equal in value to 15 twos.