Here 10 programmers, type 10 lines within 10 minutes then 60 lines can type within 60 minutes. How many programmers are needed?
Choose the correct answer:
A) 16
B) 10
C) 6
D) 60
E) 50
10   10 programmer 10 line 10 mins.   10 programmer 20 line 20 mins.   .   .   .   .10 programmer 60 line 60 mins.   ANSWER:60
<result>D</result>
Here 10 programmers, type 10 lines within 10 minutes then 60 lines can type within 60 minutes. How many programmers are needed?