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| rev | Admin | (Created page with "'''Solution: C''' Child 1 needs <math>X v^3+Y v^{21-1}</math>. Child 2 needs <math>X v^3+Y v^{21-3}</math>. Child 3 needs <math>X v^3+Y v^{21-6}</math> So total amount needed is <math>3 X v^3+Y\left(v^{20}+v^{18}+v^{15}\right)</math>. '''References''' {{cite web |url=https://web2.uwindsor.ca/math/hlynka/392oldtests.html |last=Hlynka |first=Myron |website=web2.uwindsor.ca | title = University of Windsor Old Tests 62-392 Theory of Interest | access-date=November 23,...") | Nov 26'23 at 20:51 | +482 |