4 boys and 5 girls are to share 405 naira,such as each girl gets thrice as much as a boy . What is the share each girl gets

Let x be the share that each boy gets.

Then each girl gets 3x.
The total amount of money shared is 4x (for the boys) + 5(3x) = 19x.
We know that the total amount shared is 405 naira, so:
19x = 405
x = 21.32 (rounded to two decimal places)
Therefore, each boy gets 21.32 naira and each girl gets 3 times that amount, which is:
3(21.32) = 63.96 naira.