For this problem, I went off to a completely different approach than that explained in the example provided in the solution. I do not understand the approach provided in the example -
if we use jug A for the last step, we need to measure at least 2100 - 230 = 1870mL. and at most 2300 - 240 = 2060mL.
Shouldn’t the at least be 2100 - 240 =1860mL and at most 2300 - 230 = 2070mL ?