a person makes a profit of 50% of the cost of the investment in the transaction of her cosmetic items. She further increases her cost of investment by 25% but the selling price remains the same. how much is the decrease in her profit percent ?​

Darcy deposited $390 into a savings account. as long as the account balance remains at or above $150, she does not have to pay a service fee for the account. for how many months can she withdraw $40 a month without having to pay service fees? a) 3 b) 5 c) 6 d) 9