Thursday
March 23, 2017

Post a New Question

Posted by on Tuesday, January 11, 2011 at 9:46pm.

Tom's mother pays him $.50 for each problem his gets correct on his test, but he has to give her .25 for each problem he gets wrong. If Tom makes $8.00 on the test, and there were 25 total problems on the test, how many did he answer correctly?

Thanks!

  • algebra - , Tuesday, January 11, 2011 at 9:54pm

    NC is number corret.
    NC+NR=25

    .5*NC-.25NW=8
    .5*NC-.25(25-NC)=8
    .5*NC-6.25+.25*NC=8
    solve for NC

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question