Question

20 log A =22 , find A

Answer 1

Firstly,

20logA=40

Now,let us move 20 in L.H.S to R.H.S..So as it(20) is multipiled by logx…it will goes as a denominator to 40(in R.H.S).

Now..our equation looks like,

logA=40/20

Then…logA=2(as 20 divides 40..2 times)

Now…Consider the equation logA=2…and it is has 10 as a base….so…it looks like loga=b(in which “a” will have a value which is 10^b)..

So..by comparing our equation with loga=b..

We will get..a=10^2

which gives a=100 as answer.. :)

Hope it helped you!!!

Answer 2

20 logA=22

logA=22÷20

logA=1.1

A=antilog(1.1)

A=12.88

Therefore, A=12.88

Hope,it helps u...

Thanks