Comments on: Problem solving

By: Tapas

Tapas — Mon, 31 Aug 2009 09:37:50 +0000

10/3

By: Navya

Navya — Thu, 12 Jun 2008 08:40:03 +0000

Ans is 10/3

By: tat

tat — Wed, 11 Jun 2008 03:54:27 +0000

ans is 10/3

By: pavan

pavan — Wed, 11 Jun 2008 03:39:23 +0000

3^6x = 8100

therefore, 3^3x * 3^3x = 90 * 90
from above we can say, 3^3x = 90 ——————————-i

the reqd eqn, is (3^(x-1))^3 => 3^3x – 3^3 => 3^3x/ 27 ——- ii

from i & ii, sub 3^3x, so 3^3x/ 27 = 90/27 =>

10/3 ……… answer E …….

I’ve posted the question from previous GMAT test paper

By: Richa

Richa — Wed, 11 Jun 2008 02:20:45 +0000

10/3
3^6x=8100, we get the value of x=100/9
then we substitue the value of x in the other equation.
Incase there is any other way of solving this problem please share.

By: kapil dhawan

kapil dhawan — Tue, 10 Jun 2008 16:35:28 +0000

pleas give the explanation of this problem

By: Patel

Patel — Tue, 10 Jun 2008 05:20:27 +0000

10/3