fraction

Question

Pls explain ur answers

jainu · Answer

May
Lee's Income=L
Lee's Family income=LF
Also,
L=.6LF--- (1)

June
Lee's Income=1.2L
Lee's Family income=LF

We want to find
(1.2L/LF)*100===?
From (1),
LF=5L/3

Hence (1.2L/LF)*100=(1.2L/5L/3)*100=(3.6/5)*100=72%

ritula · Answer

I also calculated answer as 72% but its not the OA

tusharvk · Answer

let the total income in may for Lees be 100.
Mrs income is 60.
Rest of Lees make 40.
In june, Mrs makes 72. Rest of the family stays at 40.
So,
72/(72+40)=72/112=18/28 = 9/14 = .64
Hence, A.

mrsmarthi · Answer

Let be Mrs L income in MAY be x. It is given this is 60% of TI(Total income)

==> x = 60% of TI

In June she earned 20 % more than in may ie her income in June will be X+ 20% x = 120% x

Now 120% X will be 120 % of 60 % of TI =  120 / 100 * 60 /100 * TI  = 72 % of TI

ldpedroso · Answer

Let's pick numbers. Mr. Lee earns $ 60, and the income of his family is $ 100. If he gets 20% more, he gets $72, and Lee's family total income would be $ 112. 
So, 72 / 112 = aprox. 64%. A is the correct answer

mrsmarthi · Answer

Oops.....that is true. Answer might be A.

x2suresh · Answer

%= 72/72+40 = 9/(5+9)=9/14 = 64.28%

A

GMAT TIGER · Answer

It should be A.

= \frac{1.2 (0.6x)}{1.2(0.6x)+0.4x}

= approx........... 64%

ritula · Answer

OA is A.
Thanks 2 all

tusharvk · Answer

Suresh

how did you get the last two decimals? I was only able to do 64 without calculator.

x2suresh · Answer

try again???? :lol:

you will get the fractional part too.. though it is not necessary find fractional part for this question..

GMAT TIGER · Answer

Precisely, it is 64.29%.

=0.72/1.12
= 9/14
= 64.29%

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