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Question

In ABC, if P,Q,R divides BC,CA,AB in 1:4,3:2,3:7 respectively and S divides AB in 1:3 then ¯¯¯¯¯¯¯¯AP+¯¯¯¯¯¯¯¯¯BQ+¯¯¯¯¯¯¯¯CR¯¯¯¯¯¯¯¯CS

A
15
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B
25
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C
52
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D
710
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Solution

The correct option is B 25
R.E.F image
P=c+4b5

Q=2c+3a5

R=3b+7a10

S=b+3a4

AP+BQ+CR

=c5+4b5+2c5b+3b10c
=b102c5
CS=b4C
25CS=AP+BQ+CR

25=AP+BQ+CRCS

|AP+BQ+CR||CS|=25


1083409_1187853_ans_a999d70241ae411d824901f370804cd2.png

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