The task is to generate the correct answer for a given math problem.

Problem: a shopkeeper loses 15 % , if an article is sold for rs . 102 . what should be the selling price of the article to gain 20 % ?
rs . 144

Problem: a square with sides of 15 units each . what would be the area of the square . consider a square as a combination of two right angled triangles .
225', 'd ) 81', 'e ) 144'

Problem: the diameter of the driving wheel of a bus in 140 cm . how many revolutions per minute must the wheel make in order to keep a speed of 33 kmph ?

125