Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.

[EX Q]: Problem: a rhombus has area 432 sq m, one diagonal is 36 cm. find other diagonal ?
Options: ['a. 2400 m', 'b. 2500 m', 'c. 2600 m', 'd. 2700 m', 'e. 2900 m']
[EX A]: a

[EX Q]: Problem: the average age of 8 men increases by 2 years when two women are included in place of two men of ages 20 and 22 years. find the average age of the women ?
Options: a. 87, b. 98, c. 30, d. 29, e. 37
[EX A]: d

[EX Q]: Problem: jansi went out for shopping. she had in her handbag approximately rs. 15 / - in one rupee notes and 20 p. coins. when she returned she had as many one rupee notes as she originally had and as many 20 p. coins as she originally had one rupee notes. she actually came back with about one - third of what she had started out with. how much did she spend and exactly how much did she have with her when she started out ?
Options: a. 9.6, b. 10.6, c. 11.0, d. 9.4, e. 8.1
[EX A]:
a