David gets to work in 20min when he drives his car. Riding his bike (by the same route) takes him 45min. His average car speed is 4.5mph greater than his average speed on his bike. How far does he travel to work?

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 ?