SSC GD Constable 18 Nov 2021 Shift 3 Paper

A certain sum amounts to ₹17,925 in 3 years and to ₹21,825 in 7 years at the same rate per cent per annum at simple interest. What will be the simple interest (in ₹) on a sum of ₹18,500 for 4$\frac{2}{5}$ years at double the earlier rate?