A computer can perform y calculations in s seconds. How many minutes will it take the computer to perform k calculations?	Pick:
A) 60ks/y B) ks/y C) ks/60y D) 60y/ks E) k/60ys
As 'thick' as this question might look, it's actually a fairly straight-forward Rate question and can be solved by TESTing VALUES.   We're told that a computer can perform y calculations in S seconds.   Let's TEST....   y = 2   S = 3   2 calculations every 3 seconds =   40 calculations every 1 minute   We're asked how many MINUTES it will take to perform K calculations.   Since we already know that the computer can perform 40 calculations in 1 minute, let's TEST...   K = 80   So we're looking for an answer that = 2 when y = 2, S = 3 and K = 80   Answer A: 60KS/y = 60(80)(3)/2 = 7200 This is NOT a match   Answer B: KS/y = (80)(3)/2 = 120 This is NOT a match   Answer C: KS/60y = (80)(3)/(60)(2) = 2 This IS a match   Answer D: 60y/KS = 60(2)/(80)(3) = 1/2 This is NOT a match   Answer E: K/60yS = 80/(60)(2)(3) = a fraction. This is NOT a match   ks/60y
<result>C</result>
A computer can perform y calculations in s seconds. How many minutes will it take the computer to perform k calculations?