Need Help Logical Question There are three small tanks of capacity 35 L, 56 L, 84 L. Lets Find what will be the biggest capacity of a container which will measure the oil in 3 tanks in exact whole numbers.
Ans=71.
Please Provide Solution and Explain.

When words like biggest, highest and greatest are used. You have to find HCF.
HCF of 35 L, 56 L and 84 L is 7 L. So answer is 7 L. 
In answer after 7 it's L not 1.
