Kim bought 4 shirts and 3 pairs of jeans for 109.85.
Jim bought 6 shirts and 1 pair of jeans for 94.95
The shirts and the jeans all cost the same amount. What is the cost, in dollars, of one pair of jeans?

Question

anonymous · Answer

Damn, she likes clothes.

anonymous · Answer

If a is the cost of shirts and b is the cost of jeans:$$4a+3b=109.85$$$$6a+b=94.95$$You can just solve these equations simultaneously to get the answer.

anonymous · Answer

or write $$b=94.95-6a$$ and substitute.  either way

anonymous · Answer

That is solving them simultaneously.

anonymous · Answer

But do I want to substitute for b (cost of jeans) if i'm trying to find the cost of the jeans? Shouldn't i subsitute for a ?

anonymous · Answer

Yes, but sometimes its easier to find b first and then find a.