Math Word Problem Need Help?

Question

The number of instructions N performed per second by a computer varies directly as the speed S of the computer internal processor. A processor with a speed of 25 megahertz can perform 1,500,000 instructions per second.

a) Find an equation of variation.

b)How many instructions per second will the same processors will the same processors perform if it is running at a speed of 210 megahertz?

A) Find an equation of variation. N=__

B) The same perform ___ instructions if it is running at a speed of 210 megahertz  

Answer 1

Nicole, I hope I can still help.

 

We first have to find the constant of variation. Let k = the constant of variation.  We have 1,500,000 = 25k.

 

Dividing both sides by 25, we get k = 60,000

 

So, our equation of variation is N = 60,000S

 

I bet you can find the answer if S = 210!