A and b are two different chemical species undergoing first order decomposition with rate constantska and kb which are in ratio 3:2
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A's half life is 2yrs old left
B's half life is 3 yrs old left
after the 3 half lives of a and b the concentration of a is A/8 and then the time taken is 2 multiplied by 3 that is 6years
At 3years b will be b/2 and after six years b would be then b/ratio.
That is a/8*b/4=3/4
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