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Discussion :: Simplification

  1. A fires 5 shots to B's 3 but A kills only once in 3 shots while B kills once in 2 shots. When B has missed 27 times, A has killed:

  2. A.

    30 birds

    B.

    60 birds

    C.

    72 birds

    D.

    90birds

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    Answer : Option A

    Explanation :

     

    Let the total number of shots be x. Then,

    shots fired by A=  \(\frac { 5 } { 8 } X\)

    shots fired byB=\(\frac { 3 } { 8 } X\)

    Killing shots by A =\( \frac { 1 } { 3 } \)of\(\frac { 5 } { 8 } X\)=\( \frac { 5} { 24 }X\)

    Shots missed by B =\( \frac { 1 } { 2 }\)of\(\frac { 3 } { 8 } X\)=\( \frac { 3 } { 16 }X \)

    \( \frac { 3X } { 16 } \)=27or X=\([\frac { 27*16 } {3}]\)=144

    Birds killed by A =\(\frac { 5X} { 24 }\)=\( [ \frac { 5 } { 24 }*144] \)=30

     


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