Mathematics · Ratio and Proportion
If (a + b) : (b + c) : (c + a) = 7 : 4 : 5 and a + b + c = 16, then (a2 + b2 + c2) : (ab + bc + ca) is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 119 : 26
- 227 : 20
- 323 : 15
- 426 : 19✓
Correct answer
26 : 19
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