Eddie wishes to donate $516 among different orphanages in such a way that each orphange receives an equal sum of money. Among how many orphanges can he donate?
Using divisibilty rule for 3, 4, 12
we know that 516 is divisible by 3 ( ∵ 5+1+6=12)
516 is divisible by 4 ( ∵ last two digits "16" is divisible by 4)
If a number is divisible by 4 and 3, then the number is also divisible by 12, so 516 is also divisible by 12.
∴ Eddie can donate $516 among 12 different orphanages equally.