The ratio of age of Ram and Shyam is 4:5. If the sum of their ages is 81, what is Shyam's age after 9 years? राम और श्याम की आयु का अनुपात 4:5 है। यदि उनकी आयु का योग 81 है, तो 9 वर्ष बाद श्याम की आयु क्या होगी?
A
45 (45)
B
54 (54)
C
36 (36)
D
63 (63)
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Correct Answer 54
Explanation
Total parts = 9. 1 part = 81/9 = 9. Shyam's present age = 5*9 = 45. After 9 years = 45 + 9 = 54.