7 वर्ष पूर्व, A और B की आयु 4:5 के – McqOptions

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1.	7 वर्ष पूर्व, A और B की आयु 4:5 के अनुपात में थी तथा 7 वर्ष के बाद वे 5:6 के अनुपात में होगी \| B की वर्तमान आयु है ?
A.	22
B.	77
C.	12
D.	56
Answer» C. 12

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