JEE Main 24 June 2022 Shift 1 Solved Paper

A metre scale is balanced on a knife edge at its centre. When two coins, each of mass 10g are put one on the top of the other at the 10.0‌cm mark the scale is found to be balanced at 40.0‌cm mark. The mass of the metre scale is found to be x×10−2‌kg. The value of x is__