plz help me to solve this question
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Answer:
- let 1 adult pay =X Rs
- and 1 senior citizen pay=y Rs
- now
- condition::::1
- 6x+4y=$228
=>42x+28y=$1596........(1)
- condition::;2
- 13x+7y=$459..
=>52x+28y=$1836........(2)
comparing equations 1 and 2...
$1596-42x=$1836-52x
=>10x=$240
=>X=$24
and
y=[$1596-$(42×24)]/28=$588/28=$21
so ...2 adults and 1 senior citizen will pay
so ...2 adults and 1 senior citizen will pay=$[{2×24}+21]=${48+21}=$69
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