If you would like to know the equation that shows the number of teaspoons of sugar needed to make x candy bars, you can calculate this using the following steps:
2.5 teaspoons of sugar ... 1 candy bar
y teaspoons of sugar = ? ... x candy bars = ?
2.5 * x = 1 * y
2.5 * x = y
y = 2.5 * x
The correct result would be y = 2.5 * x.
