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drek231 [11]
3 years ago
15

Robert needs to cut four shelves from a board that is 2.5 meters long. The second shelf is 18 centimeters longer than twice the

length of the first shelf. The third shelf is 12 centimeters shorter than the first shelf. The remaining shelf is 4 centimeters longer than the first shelf. If Robert must use the entire 2.5 meter board for the shelves, what is the length of the second shelf, in centimeters?
Mathematics
1 answer:
USPshnik [31]3 years ago
7 0
   1st shelf: 48cm
 2nd shelf: 114cm
   3rd shelf: 36cm
   4th shelf: 52cm
Total length: 250cm or 2.5m 
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The following equations can be derived from the question

12x + 8y = 120  equation 1

4.5x + 3.5y = 49.50 equation 2

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