# math

posted by chin

A stadium have to section a & B .
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

1. sydney

i) 105 = 5A + 3B
63 = 4A + 1B

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

cheers

2. maribel

so 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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