Dan needs to gain 8% of his current body weight to wrestle in weight class A. Dan needs to lose the same percent of his current weight to wrestle in weight class B. What percent of Dan's class A weight, to the nearest tenth, does he need to lose to get to his class B weight?
so...
this is my formula:
(X/100) = (X1-X1*8%)/(X1+X1*8%)
X/100 = (X1-0.08X1)/(X1+0.08X1)
X/100=0.92X/1.08X
X/100 = 0.92/1.08
X=92/1.08 = 92/(108/100) = 92 * (100/108) = 2300/27
let me know what you think.....HELP..like seriously need your help all the GMAT destroyer
percents problem totally confusing!!
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- eloka
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Lets dan's body weight is 100x
so class A body weight is 100x+100x*8/100 =108x
class B body weight is 100x-8x=92x
so a class A needs to loose (108-92)x or 16x to perform in class B
this is 16/108 *100% of class A weight 4*100/27 or 400/27 or 14.81%
so class A body weight is 100x+100x*8/100 =108x
class B body weight is 100x-8x=92x
so a class A needs to loose (108-92)x or 16x to perform in class B
this is 16/108 *100% of class A weight 4*100/27 or 400/27 or 14.81%
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- indiantiger
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Lets say Dan's weight is 100 lbs
Weight for Class A is 100 + 8/100*100 = 108
Weight for Class B is 100 -8/100 *100 = 92
difference between weight of class A and Class B
= 16
16 *100/108 = 0.1481*100 = 14.81 % <I had earlier made stupid mistake here that I corrected>
Weight for Class A is 100 + 8/100*100 = 108
Weight for Class B is 100 -8/100 *100 = 92
difference between weight of class A and Class B
= 16
16 *100/108 = 0.1481*100 = 14.81 % <I had earlier made stupid mistake here that I corrected>
Last edited by indiantiger on Wed Jun 09, 2010 7:53 pm, edited 1 time in total.
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- indiantiger
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May be I interpreted the question wrong but this is what I thought
Weight of Class A - Weight of Class B = 108-92 = 16 (thats the gap between Class A and Class B)
% of weight that needs to be lost to get to class B = gap / 108
Let me know if I did something wrong. Would like to get my mistake solved here rather than make it on GMAT
Weight of Class A - Weight of Class B = 108-92 = 16 (thats the gap between Class A and Class B)
% of weight that needs to be lost to get to class B = gap / 108
Let me know if I did something wrong. Would like to get my mistake solved here rather than make it on GMAT
"Single Malt is better than Blended"
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what ever u said is the same way I have interpreted.But my question isindiantiger wrote:May be I interpreted the question wrong but this is what I thought
Weight of Class A - Weight of Class B = 108-92 = 16 (thats the gap between Class A and Class B)
% of weight that needs to be lost to get to class B = gap / 108
Let me know if I did something wrong. Would like to get my mistake solved here rather than make it on GMAT
% of weight that needs to be lost to get to class B = gap / 108=16/108 =14.81% but in ur calculation it is 100/8=12.5%..which u have corrected Now .So we are now in same page.
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