5: 8 എന്ന അനുപാതത്തിന്റെ ഓരോ പദത്തിലും 8 ചേർത്താൽ, അനുപാതം 13: 16 ആയി മാറുന്നു, ആദ്യത്തെ സംഖ്യ കണ്ടെത്തുക.
A8
B5
C7
D12
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