Question

Find the volume of M and N​

Answer 1

The combined sum of M is 20, and N=5.
We know that their are 3 missing blocks from N, and that the sum of those missing blocks is 15.
Now we can find the value of one block. 15/3=5.
The one block of N=5, and M=4N.
So, M=4(5)=20.