the ratio is the age a and b is 5:7. if the diference between the present age b and that of a, 6years hence is 2. total age of a and b
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present age a = 5x
present age of b = 7x
Age of a after 6years = 5x + 6
7x - 5x - 6 = 2
2x = 8
x = 4
Total present age of a and b = 5x + 7x = 5x 4 + 7x4 = 20 + 28 = 4
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