Task: Question Answering
Input (English): Problem: a 90 cm long wire is to be cut into two pieces so that one piece will be 2 / 7 th of the other, how many centimeters will the shorter piece be ?
Options: a. a. 73, b. b. 20, c. c. 83, d. d. 21, e. e. 52
Output (English): b