1/[(100/3)+(100/37)]ajmoney09 wrote:
(A) 0.004
(B) 0.02775
(C) 2.775
(D) 3.6036
(E) 36.036
I can do this problem easily the long way...but I don't have time for that on the GMAT...If there wasn't a plus sign I know the trick, but the plus sign messes it all up....because the shortcut way the way you would do it if you had 5/(1/4) is you move the four to the top and you multiple 5 times 4... but here you cannot do that as you get .4, but the OA is B, which is .02775.
Thats great, Thanks man.logitech wrote:1/[(100/3)+(100/37)]ajmoney09 wrote:
(A) 0.004
(B) 0.02775
(C) 2.775
(D) 3.6036
(E) 36.036
I can do this problem easily the long way...but I don't have time for that on the GMAT...If there wasn't a plus sign I know the trick, but the plus sign messes it all up....because the shortcut way the way you would do it if you had 5/(1/4) is you move the four to the top and you multiple 5 times 4... but here you cannot do that as you get .4, but the OA is B, which is .02775.
1/SOMETHING BIGGER THAN 1
So C, D and E are gone
so it is actually
1/(30ish+3ish)
1/33ish = 1/3 = 0.3ish
B fits the bill
