Trouble with this rate problem

<ol>
<li>A computer can perform c calculations in s seconds. How many minutes will it take the computer to perform k calculations?</li>
</ol>

<p>a. 60ks/c
b. ks/c
c. ks/60c
d. 60c/ks
e. k/60cs</p>

<p>Can you show me algebraically? Thanks in advanced.</p>

<p>computer can do c/s calculations per second.</p>

<p>How many seconds does it take to k - k divided by c/s. - ks/c</p>

<p>How many minutes - ks/c divided by 60 = ks/c x 1/60 = ks/60c.</p>

<p>thanks. I actually got it now.</p>