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HKIMO 2019 Grade 9 National Final (Heat) Set 02 Question 4

HKIMO · HKIMO 2019 Grade 9 National Final (Heat) Set 02

Question 4

Given $A:B=4:3$, $B:C=5:2$, $C:D=4:5$ and $A+B+C+D=2910$, find C.