Question 1191584

IT TAKES 20 MEN 60DAYS TO COMPLETE A BUILDING WORK, HOW MANY DAYS LONGER WOULD IT TAKES 15 MEN ASSURING THAT THEY ALL WORK AT THE SAME RATE
<pre>                         {{{matrix(3,3, M, "=", k(j)/T, 20, "=", k(1)/60, k, "=", "1,200")}}}           {{{matrix(3,3, M, "=", k(j)/T, 15, "=", "1,200"(1)/T, 15T, "=", "1,200")}}}
Time it takes 15 men, working at the same rate, or {{{matrix(1,6, T, "=", "1,200"/15, "=", 80, days)}}}
Days longer that it'd take 15 men: <font color = red><font size = 4><b>80 - 60 = 20</font></font></b>