The time taken, t (in seconds), to boil water in a kettle is inversely proportional to the power, p (in watts) of the kettle. A full kettle of power 1500W boils the water in 400 seconds.
a) Write a formula for t in terms of p.
b) A similar kettle has a power of 2500 W. Can this kettle boil the same amount of water in less than 3 minutes