Hideously Easy Peasy Challenge
An ugly man has $50 and needs to spend a grand total of half of triple of $50 on Saturday night in order to be beautiful. Today is Monday. How much more money would he need for Saturday night if 80% of his $50 was stolen on Wednesday, 50% of his remaining money was stolen on Friday, and 35% of his original $50 was added to the money he had left by Saturday morning?
Challenge: Can you solve in under a minute with no calculator?