Rithvik's Blog 11+

Lila has a box of chocolates. She gives away 1/4 of the chocolates to her friend, and then she eats 30% of the remaining chocolates. If she has 42 chocolates left after eating, how many chocolates were in the box originally?

Tom had a bag of marbles. He gave half of his marbles to his friend Jerry. Then, he gave one-third of what was left to his sister Anna. After that, he was left with 10 marbles. How many marbles did Tom have initially?