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Option 3 : 2018
Given
In 2008 A = Rs. 3.2, B = Rs. 5.3
each year A is increased by Rs. 0.5 and B is increased by Rs. 0.25
Calculation
let after n year A will be Rs. 0.4 more than B
=> A + n(0.5) = B + n(0.25) + 0.4
=> 3.2 + 0.5n = 5.3 + 0.25n + 0.4
=> 0.5n - 0.25n = 5.7 - 3.2
=> 0.25n = 2.5
=> n = 2.5/0.25 = 10 years
so after 10 years from 2008 the year will be 2018
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