Acar travels 120 miles in 3 (with a constant speed). how far will it take to travel 200 miles (proportion)

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

This is about circle theorems. someone asap : (

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.