Maria uses 40% of her pocket money to buy shoes,then she used 30%of the remainder to buy adictionary .find the percentage of her pocket money.

Answer 1

after shoes, 60% of her money is left
after dictionary, 70% of the 60% is left or, (.7)(.6) or .42 or 42% of her money is left

Whatever question you have, you should be able to answer it from this.