To distribute the load of 486 sacks of cement in 9 trucks evenly. 486 must be completely divisible by 9.
For the number 486 to be divisible by 9, the sum of digits must be divisible by 9.
4+8+6=18
18 is divisible by 9.
∴ It is possible to distribute 486 sacks into 9 trucks evenly.