BA LLB Banaras Hindu University 2018 Solved Paper

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Question : 118 of 170

Marks: +1, -0

The average weight of

P, Q

and

R

is

47 {kg}

. If the average weight of

P

and

Q

be

32.5 {kg}

and that of

Q

and

R

be

48.5 {kg}

. then what is the weight of

Q ?

$25 {kg}$
$21 {kg}$
$29 {kg}$
$33 {kg}$

Solution:

Total weight of

P, Q

and

R

=47 × 3=141 {kg}

Total weight of

P

and

Q

32.5 × 2=65 {kg}

Total weight of

Q

and

R

=48.5 × 2=97 {kg}

∴ Q

's weight

(P+2 Q+R)-(P+Q+R)

=(65+97)-141

=162-141=21 {kg}

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