Find the x Please help me and show how you got it :)
1 answer:
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Answer:
Step-by-step explanation:
7a + 7c = 861 ...... <em>(1)</em>
7a + 5c = 829 ..... <em>(2)</em>
<em>(1)</em> - <em>(2)</em>
2c = 32
<u><em>c = 16</em></u>
<u><em>a = </em></u>123 - 16 =<u><em> 107</em></u>
Answer:
Any multiple of 71 (i.e. 71, 142, 710, etc)
Step-by-step explanation:
Republicans = R
Democrats = D
Republicans that liked apple pie = 0.80R
Democrats liked eclairs = 0.55D
Republicans who liked apple pie that also liked eclairs = (0.80*0.20)R
If the number of Republicans who liked both desserts is equal to the number of Democrats who liked eclairs, then the following must be true:
Since the number of Republicans and Democrats must be integers, the least number of members possible is 71 (55+16).
Any value that is a multiple of 71 is a possible value for the number of members of the group