Question

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Answer 1

Hey mate,

Solving,

t75%/t50% = 2,

So,

By formulaes,

t75 = ln(100/100-75)/k

= ln(100/25)/k

= ln(4)/k

ln into log = 2.303*log,

= 2.303*log(4)/k

= 2.303*2*0.301/k

= 0.602

Now,

Like above ⤴,

t50 = 2.303*0.301/k

= 0.301

Now,

Taking ratio,

t75%/t50% = 0.602/0.301

= 2

Hence proved.

Hope this helps you out!