TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: find the simple interest on rs . 70,000 at 16 2 / 3 % per year for 9 months .

SOLUTION: 8750

PROBLEM: Problem: robert ' s salary was decreased by 20 % and subsequently increased by 20 % . how much percentage does he lose ?

SOLUTION: 4 %

PROBLEM: Problem: the effective annual rate of interest corresponding to a nominal rate of 16 % per annum payable half - yearly is ?

SOLUTION:
16.64 %