lnp=lna-h/rt. how to solve for t?
According to the BODMAS rule:
--->h/rt=(h/r)t=(ht/r)
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ln(p)=ln(a)-(ht/r)
(ht/r)=ln(a)-ln(p)
(ht/r)=ln(a/p)
ht=rln(a/p)
t=[r*ln(a/p)]/h