The average age of Yamuna and her daughter, Sathvika, is 21 years. The ratio of their ages is 5: 2. Find the age of Sathvika.
A15 years
B10 years
C17 years
D12 years
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അമ്മയുടെയും മകളുടെയും വയസ്സുകളുടെ തുക 56 ആണ് 4 വർഷം കഴിഞ്ഞാൽ അമ്മയുടെ വയസ്സ് മകളുടെ വയസ്സിൻ്റെ മൂന്നിരട്ടി ആകും അമ്മയുടെ ഇപ്പോഴത്തെ വയസ്സെത്ര?
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