SOLUTION: The question is 5/B = 8/10 b= what Trying to help my son with homework and this one has us both stuck. Help would be appreciated so I can explain it and help him get the r

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: The question is 5/B = 8/10 b= what Trying to help my son with homework and this one has us both stuck. Help would be appreciated so I can explain it and help him get the r      Log On


   

Question 720392: The question is
5/B = 8/10
b= what
Trying to help my son with homework and this one has us both stuck. Help would be appreciated so I can explain it and help him get the right answer himself.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
5%2FB = 8%2F10
When you have a single fraction on either side of the equal sign, just:
Cross multiply and you have
8B = 5*10
8B = 50
divide both sides by 8
B = 50/8
B = 6.25
:
:
YOu can prove this to yourself, on a calc
5/6.25 = .8
8/10 = .8, equality reigns!