Question

2375 1st sister ne 2375 Diye 2375+2375=4750 4750-2000=2750 2nd sister 2750+2750=5500 5500-2000=3500 3rd sister 3500+3500=7000 7000-200=5000 Ans. 2375

Answer 1

so what can do . I did not understand it