Ask your own question, for FREE!
Mathematics 12 Online
OpenStudy (anonymous):

SAT: Joan originally had twice as many books as Emily. After she gave Emily 5 books, Joan still had 10 more than Emily. How many books did Joan originally have?

OpenStudy (whpalmer4):

Let J be the number of books Joan originally had. Let E be the number that Emily originally had. J = 2*E After giving 5 books to Emily, Joan still has 10 more books than Emily: J - 5 = E + 5 + 10 You should be able to solve this by substituting "2*E" wherever you see J in that second equation and solving for E. Then use the first equation to find the value of J.

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
VERNEISH: Two objects are moving along separate linear paths where each path is described by position, d, and time, t.
7 hours ago 1 Reply 0 Medals
Arriyanalol: i need help
2 days ago 7 Replies 1 Medal
Arriyanalol: CONGRATS to me
2 days ago 8 Replies 2 Medals
Maci: what are the best stock apps for people who want to start investing?
4 days ago 3 Replies 2 Medals
Twaylor: genuienly how do i get better self control i keep watcing youtube and theres this
1 week ago 3 Replies 0 Medals
IzzyCookie: |dw:1792074056138:dw| Uhm, I don't know where to ask this, but I'm in college welding at my community college, and I need help learning vertical welding for
2 days ago 9 Replies 1 Medal
Legomaster346: What colleges are good that are near Arab Alabama?
1 week ago 5 Replies 0 Medals
Maci: what is your thoughts on qc reaching 10years lmk who the ogs
1 week ago 9 Replies 1 Medal
thehearken: not sure if this is considered spam, im sorry if it is, but does anyone have tips
1 week ago 2 Replies 1 Medal
Arriyanalol: i need help
1 week ago 6 Replies 2 Medals
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!