Quantitative Aptitude - If A,B,C are the mechanism used seperately to reduce the wastage of the fuel by 30%, 40%, 10% What w

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If A,B,C are the mechanism used seperately to reduce the wastage of the fuel by 30%, 40%, 10% What will be the fuel economy if they were used Combined?

A. 68.4
B. 62.2
C. 58
D. 27

Total Answers and Comments: 3

Last Update: July 21, 2008 Asked by: priya

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Submitted by: mnotageek

ok let us suppose 100 kg of fuel is being wasted.. if i use the A then 30 kg will be saved n 70 kg will be wasted. now if i bring in B it will save 40% of 70 n (70*0.6)=42 kg will be wasted. Now if i incorporate C then it will save 10%of 42 i.e..,(42*0.9) 37.8 kg will be wasted... so 100-37.8=62.2 kg will be saved.. so ans is 62.2%

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vijayprakash85

July 19, 2007 14:49:50

mnotageek

Member Since: July 2007 Contribution: 1

RE: If A,B,C are the mechanism used seperately to redu...

ok let us suppose 100 kg of fuel is being wasted.. if i use the A then 30 kg will be saved n 70 kg will be wasted. now if i bring in B it will save 40% of 70 n (70*0.6)=42 kg will be wasted. Now if i incorporate C then it will save 10%of 42 i.e..,(42*0.9) 37.8 kg will be wasted... so 100-37.8=62.2 kg will be saved.. so ans is 62.2%

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September 22, 2007 08:11:45

ramesh

RE: If A,B,C are the mechanism used seperately to redu...

Answer will be 62.2 because,

= (70/100)*(60/100)*(90/100)

= 0.378

=37.8 in%

=>100-37.8

=62.2

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July 21, 2008 03:58:25

a.karthickeie

Member Since: July 2008 Contribution: 1

RE: If A,B,C are the mechanism used seperately to reduce the wastage of the fuel by 30%, 40%, 10% What will be the fuel economy if they were used Combined?

combination of three mechanism is
30+40+10=80/3
=26.666=27

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