Answer:
10
Step-by-step explanation:
If a board is 3.75 inches wide and he wants the table to be at least 36 inches wide, then we need to use the rule of three:
If a 1 board ---------------------------> 3.75 inches wide
x ---------------------------> 36 inches wide
x = (36 inches wide * 1 board)/3.75
x= 9.6 boards.
Like we cannot buy 9.6 boards, then we conclude that the least number of boards he can use is 10.