The number of students in math to english class is 4:5. There are 1500 students in the building . How many are in the mary class

How to solve it and what thw answer is

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?