Rudy is training for a race. On Monday he ran 2

km. On Tuesday he ran 15% farther than on Monday.

If he increases his running distance by the

same percentage each day, on which day will he

first run more than 4 km? ... ?

Distance ran by Rudy on Monday = 2 km

Percentage of increase in distance of running each day = 15%

Let us assume that the day on which Rudy will run 4 km = x

Then

2 + 0.15x = 4

0.15x = 2

x = 2/0.15

= 13.3

From the above deduction we can conclude that Rudy will run more than 4 km on the 14th day or on Sunday. I hope the procedure is clear enough for you to understand.