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

Q: 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 .

A: 225', 'd ) 81', 'e ) 144'
****
Q: Problem: jack and jill are marathon runners . jack can finish a marathon ( 42 km ) in 7 hours and jill can run a marathon in 4.2 hours . what is the ratio of their average running speed ? ( jack : jill )

A: 5 / 5
****
Q: Problem: a man buys a cycle for rs . 2800 and sells it at a loss of 25 % . what is the selling price of the cycle ?

A:
s . 2100
****