Question 830722
Let P be the Pacific
Let C be the Caribbean
Let M be the Mediterranean
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Here is the information given in the problem:
C = P + 13
M = 4P - 40
C + P + M = 615
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Let's rewrite the problem substituting the values given in the question.
C + P + M = 615
(P+13) + P + (4P-40) = 615
Add the Ps
6P + 13 - 40 = 615
Do the addition and subtraction
6P - 27 = 615
Add 27 to each side
6P = 642
Divide each side by 6
P = 107
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If P is 107, then C is 107+13, or 120
If P is 107, then M is (4*107)-40, or 428-40, or 388
Add them together to make certain the problem is correct.
107 + 120 + 388 does indeed equal 615.
Success!
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And now I'm ready to sail on the Princess Ruby!