It takes one guy 2 hours to wash 1 car. it takes another guy 4 hours to wash the same car. how long for them to wash two of the same cars

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

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

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?