If two typist can type two pages in two minutes, how many typists will it take to type 18 pages in six minutes?

Description (বিবরণ) :

প্রশ্ন: If two typist can type two pages in two minutes, how many typists will it take to type 18 pages in six minutes?

ব্যাখ্যা:

2 pages can be typed in 2 minutes by 2 typists 
1 ''   "    "    "    " 1  "  " $\frac{2\times 2}{2}$ 
18 "   "    "    "    "  6 "  " $\frac{{\displaystyle 2\times 2\times 18}}{{\displaystyle 2\times 6}}$