Melissa earns 4% commission on everything she sells last month she sold $5,819 and this month she sold $3,792 how much money has Melissa earned for the two months

How to solve it and what thw answer is

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Two trains leave stations 546 miles apart at the same time and travel toward each other. one train travels at 95 miles per hour while the other travels at 115 miles per hour l. how long will it take for the two trains to meet