A : B = 2 : 3, B : C = 4 : 5 ആയാൽ A : B : C എത്ര?
A4 : 6 : 9
B2 : 3 : 5
C8 : 12 : 15
D6 : 9 : 15
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അപ്പുവിന്റെ അമ്മയുടെ പ്രായം അപ്പുവിന്റെ പ്രായത്തിന്റെ 9 മടങ്ങാണ്. 9 വർഷം കഴിയുമ്പോൾ ഇത് 3 മടങ്ങാകും. അപ്പുവിന്റെ ഇപ്പോഴത്തെ വയസ്സ് എത്ര ?