1. The problem statement, all variables and given/known data In an organic compound of molar mass > 100 containing only C, H , N, the percentage of C is 6 times the percentage of H while the sum of the percentages of C and H is 1.5 times the percentage of N. What is the least molar mass? 2. Relevant equations C% + N% + H%= 100% therefore, 1.5N%+ N%= 100% 3. The attempt at a solution From the above equation that I manage to calculate, N% should be 40%, the next step that I want to take is just not coming exactly to me, though I had a rough idea from the hints given in the question, but finally didn't actually manage to get the exact answer.