six years ago, the ratio of the ages of kunal and sagar…

six years ago, the ratio of the ages of kunal and sagar was 6:5. four years hence, the ratio of their ages will be 11:10. what is sagar's age at present?

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 #7466