SOLUTION: I have tried solving for s in the equation but cannot seem to get it right--can you help? 5.00s +6.50s + 7.25s + 20 = 5.50s + 4.75s +5.75s +8.00s+ 18.0 If you could just ge

Algebra.Com
Question 641878: I have tried solving for s in the equation but cannot seem to get it right--can you help?
5.00s +6.50s + 7.25s + 20 = 5.50s + 4.75s +5.75s +8.00s+ 18.0

If you could just get me pointed in the right direction I would appreciate this!

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
Start with
5.00s +6.50s + 7.25s + 20 = 5.50s + 4.75s +5.75s +8.00s+ 18.00

and multiply EVERY number by 100 to clear out the decimals

100*5.00s +100*6.50s + 100*7.25s + 100*20 = 100*5.50s + 100*4.75s +100*5.75s +100*8.00s+ 100*18.00

500s +650s + 725s + 2000 = 550s + 475s +575s +800s+ 1800


Note: this effectively moves the decimal 2 spots to the right for each number

-------------------------------------------------------
Now let's solve for 's'


500s +650s + 725s + 2000 = 550s + 475s +575s +800s+ 1800

1875*s+2000 = 550s + 475s +575s +800s+ 1800

1875s+2000 = 2400s+1800

1875s - 2400s = 1800 - 2000

-525s = -200

s = -200/(-525)

s = 8/21

s = 0.3809523

If you need to round to the nearest hundredth, then the final answer is s = 0.38

RELATED QUESTIONS

Hi, I have tried for quite a while now, but can't seem to get the answer. Here's the... (answered by MathLover1)
How would i go about solving the equation 5.2x -1.5x^2 -1= 3 ? I have tried numerous... (answered by josgarithmetic)
Please help with the following. I have tried setting up an equation but i cannot seem to... (answered by Cromlix)
Hi I hope you can help. My question is 5(2x-1)=4(4-x) I know the answer to this but I... (answered by stanbon)
What are the step to solving this problem because I have the answer for a, which are 7,... (answered by Alan3354)
I'm taking a college algebra class. I have not had any algebra experience in over 20... (answered by Alan3354,rfer)
For r(x) = 10x^2-19x-5 find all values of r(a)=-11. My problem with this is i cannot... (answered by richwmiller)
Hello, I have been trying to solve this problem for a while now, but can't seem to get... (answered by stanbon)
I posted this earlier but I cannot seem to get the answer can someone please help out... (answered by stanbon)