the age of A and B are in the ratio 3 ratio for 5 year later the sum of their ages will be 31 years what are their present age
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Present Ages of A & B are 9 & 12 years if the age of A and B are in the ratio 3 : 4 & 5 year later the sum of their ages will be 31 years
Step-by-step explanation:
Let say There present ages are A & B
A : B :: 3 : 4
=> A/B = 3/4
=> B = 4A/3
5 Year after A's Age = A + 5 Years
5 Years After B's Age = B + 5 Years
= 4A/3 + 5 Years
A + 5 + 4A/3 + 5 = 31
=> (3A + 4A)/3 = 21
=> 7A = 63
=> A = 9
B = 4A/3 = 4 * 9/3
=> B = 12
Present Ages of A & B are 9 & 12 years
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