When measuring distance 12 beads are approximately equal to 6 erasers. How many erasers are equal to 18 beads?

If 12 beads are equal to 6 erasers, then 1 bead is equal to 0.5 erasers (6 erasers ÷ 12 beads). To find out how many erasers are equal to 18 beads, multiply 18 by 0.5, which equals 9 erasers. Therefore, 18 beads are equal to 9 erasers.