Solve by any method: 0.1x + 0.06y = 9 and 0.09x + 0.5y = 52.7 Check your solution.
My answer:
0.1x=9-0.06y
x= 9-0.06y/ 0.1 = 90 – 0.6y
0.09(90 – 0,6y) _ 0.5y = 52.7
8.1 – 0.054y + 0.5y = 52.7
0.456y = 52.7 – 8.1
y= 52.7 – 8.1/ 0.456 = 97.807
x= 90 – 0.6 * 97.807 = 31.3158
(31.3158, 97.807)
Check:
0.1* 31.3158 + 0.06 * 97.807 = 9
0.09 * 31.3158 + 0.5 * 97.807 = 52.7
Teacher: Sorry, . I cannot tell what you are doing. 0 points
ok.. was the question asked wrong?
2006-09-27
19:41:46
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Mathematics