TASK DEFINITION: In this task, you need to provide the correct option for a given problem from the provided options.
PROBLEM: Problem: in assembling a bluetooth device , a factory uses one of two kinds of modules . one module costs $ 15 and the other one , that is cheaper , costs $ 10 . the factory holds a $ 140 worth stock of 13 modules . how many of the modules in the stock are of the cheaper kind ?
Options: a ) 20 , b ) 25 , c ) 30 , d ) 11 , e ) 35

SOLUTION: d

PROBLEM: Problem: what number has a 150 : 1 ratio to the number 2 ?
Options: a ) 130 , b ) 300 , c ) 200 , d ) 30 , e ) 75

SOLUTION: b

PROBLEM: Problem: in a class of 50 students , 18 take chorus , 26 take band , and 2 take both chorus and band . how many students in the class are not enrolled in either chorus or band ?
Options: a ) 8 , b ) 12 , c ) 15 , d ) 16 , e ) 18

SOLUTION:
a