04 Try it yourself Interactive

n times in T years, and the multiple after that

Pick what the sum becomes and how long it took. The console does the translation, the 100-box, the rate, and then the proportional jump to a second multiple. Nowhere does a principal appear — that is the point of the model, made visible.

10 times in 12 years, then 13 times
R = 75% · T₂ = 16 yr
The second multiple is the “in how many years will it become…” part. Set it equal to the first if the question does not ask for one.
Press Next to work through it one step at a time.
Amount–
Interest–
Total SI %–
Answer–
step 0 / 0