When 20 per cent of a number is added to another number…

When 20 per cent of a number is added to another number the second number increases to its 140 per cent. What is the ratio between the first and the second number?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #22764