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Solve this :

Q). Meera wants to buy 7 packets of pasta. Find the amount she has to pay if 9 packets cost Rs 279 ?

$Costof9packets=279\phantom{\rule{0ex}{0ex}}\Rightarrow Costof1packets=\raisebox{1ex}{$279$}\!\left/ \!\raisebox{-1ex}{$9$}\right.=31\phantom{\rule{0ex}{0ex}}Costof7packets=Costof1packets\times 7\phantom{\rule{0ex}{0ex}}\Rightarrow Costof7packets=31\times 7=217Rs\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}Regards$

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