The Fraction Table and the Change Multiplier

04 Try it yourself Interactive

One multiplier, and the reverse it needs

Choose the unit fraction, whether it is a rise or a fall, and a starting value. The console builds the multiplier, applies it, then computes the percentage needed to get back — which is never the one you applied. That last step is the most examined idea in the chapter.

600 increased by 16.66%

× 7/6 → 700; back needs 14.28%

The denominator is the d in 1/d. Choose 6 for 16.66%, 8 for 12.5%, 9 for 11.11%.

Press Next to work through it one step at a time.

Fraction–

Multiplier–

Result–

Reverse %–

step 0 / 0