Respuesta :

Americ
x= monthly $ allowance

Multiply monthly allowance (x) by 10% to equal the $3 in her purse.

x * 10%= $3
convert % to decimal (10% ÷ 100)

x * 0.10= 3
divide both sides by 0.10

x= $30 monthly


ANSWER: Her monthly allowance is $30.

Hope this helps! :)