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March 31, 2015

March 31, 2015

Posted by **chin** on Sunday, September 20, 2009 at 8:09pm.

tickets for section A cost $A each .

tickets for section B cost $B each .

johanna paid $105 for 5 section A and 3 section B.

raiyah paid $63 for 4 section A and 1 section B .

i) Write two eguations

ii) Calculate the value of A and B

- math -
**sydney**, Sunday, September 20, 2009 at 8:42pmi) 105 = 5A + 3B

63 = 4A + 1B

ii)you solve this system equation by either by substitution or elimination

cheers

- math -
**maribel**, Sunday, September 20, 2009 at 9:20pmso baisically multiply the 2nd equation by 3 so you can subtract the 3bs let me show you

105=5a+3b

-189=12a+3b

------------

-84=-7a

12=a

then substitute

105=5(12)+3B

105=60+3B

45=3B

15=B

:)

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