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

Problem: if 1.5 cm of a pencil is purple , 0.5 cm of the remaining is black and the remaining 2 cm is blue , what is the total length of the pencil ?
4 cm

Problem: if log 2 = 0.3010 and log 3 = 0.4771 then the value of log 4.5 is :
0.6532

Problem: to deliver an order on time , a company has to make 25 parts a day . after making 25 parts per day for 3 days , the company started to produce 5 more parts per day , and by the last day of work 100 more parts than planned were produced . find how many parts the company made and how many days this took .

67