The cost 5

The cost of three chairs and four tables is 320.00. If two chairs and five of the same kind cost 330.00, find the cost of
(i) 4 chairs
(ii) 3 tables

Correct answer:

x =  160
y =  150

Step-by-step explanation:

3a+4b=320 2a+5b=330  3 a+4 b=320 2 a+5 b=330  3a+4b=320 2a+5b=330  Row232 Row1Row2 3a+4b=320 2.33b=116.67  b=2.33333333116.66666667=50 a=33204b=33204 50=40  a=40 b=50  x=4 a=4 40=160
y=3 b=3 50=150

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