$$ mathrm R file=frac mathrm Length mathrm travelled mathrm by mathrm the mathrm solute remaining(mathrm cm suitable) mathrm Length mathrm travelled mathrm by mathrm the mathrm solvent still left(mathrm cm appropriate) $$I am now 81 and as they are saying aap ki aakhri khawahish kya hai,mine is to visit Mandi Bahaudin and village Hariya.A