SPM Practice 2 (Geometric Progression) : Question 14

Question 14

A gardener has the task of digging an area of 800 m 2 . On the first day he digs an area of 10 m 2 . On each successive day he digs an area of 1.2 times the area that he dug the previous day, until the day when the task is completed. Find the number of days needed to complete the task.