Posted by babs on Friday, July 22, 2011 at 7:22pm.
could someone please help solve by substitution 8x3y=88
4x+48=y

algebra  Damon, Friday, July 22, 2011 at 7:33pm
8 x  3 y = 88
8 x  3 (4 x + 48) = 88
8 x  12 x  144 = 88
4 x = 56
x = 14
then get y

algebra  Damon, Friday, July 22, 2011 at 7:51pm
x 30 sec or .5 min
y 60 sec or 1 min
x + y = 14
.5 x + y = 11
 subtract
.5 x + 0 y = 3
x = 6
y = 14x = 8


check
6*.5 + 8 = 3+8 = 11

By the way  Damon, Friday, July 22, 2011 at 7:52pm
Post new questions as new questions, not under your old one. Otherwise they will be missed.

algebra  Ms. Sue, Friday, July 22, 2011 at 7:53pm
Sorry, Damon. I removed her question here while you were answering it. I've reposted your answer above.
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