Solve the problem by applying the Polya's 4-step method.

John is saving for a new comic book subscription,and he already has Php300. Every week, he saves Php5 from his allowance. How much will he able to save in 3 weeks? 9 weeks? 21 weeks?

Vince's parents bought a portion of residential lot for Php150,000. Every year the original price of the lot in their counity increases for 40%. How much is the value of the lot if they want it to sell after 10 years?​​