Question 1074047
Let n be the shortest shelf. Then the following shelves would be n+1,n+2, and n+3. So:
n+n+1+n+2+n+3=126
4n+6=126
4n=120
n=30
The shelves will be 30,31,32,and 33 cms. long. &#9786;&#9786;&#9786;&#9786;