Homework Help: math

Posted by kim on Thursday, May 12, 2011 at 12:26pm.

Barb has twice as many books as Lisa. Mike has 25 more books than Lisa, but 15 fewer than Barb. How many books each student has?

math - bobpursley, Thursday, May 12, 2011 at 1:02pm
B=2L
M=L+25
M=B-15

so
L+25=B-15
B/2+25=B-15
B/2=10
B=20 I assume you can finish

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