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

[EX Q]: Problem: a statue is being carved by a sculptor . the original piece of marble weighed 250 kg . in the first week 30 percent is cut away . in the second week 20 percent of the remainder is cut away . in the third week the statue is completed when 25 percent of the remainder is cut away . what is the weight of the final statue ?
[EX A]: 105 kg

[EX Q]: 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 % ?
[EX A]: rs . 144

[EX Q]: Problem: convert 2.3 hectares in ares
[EX A]:
230 ares .