form the pair of linear equations for the following problems and find their solution by substitutions method
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(ɪ) ᴀ ᴘᴀʀᴛ ᴏғ ᴍᴏɴᴛʜʟʏ ʜᴏsᴛᴇʟ ᴄʜᴀʀɢᴇs ɪs ғɪxᴇᴅ ᴀɴᴅ ᴛʜᴇ ʀᴇᴍᴀɪɴɪɴɢ ᴅᴇᴘᴇɴᴅs ᴏɴ ᴛʜᴇ ɴᴜᴍʙᴇʀ ᴏғ ᴅᴀʏs ᴏɴᴇ ʜᴀs ᴛᴀᴋᴇɴ ғᴏᴏᴅ ɪɴ ᴛʜᴇ ᴍᴇss. ... ғɪɴᴅ ᴛʜᴇ ғɪxᴇᴅ ᴄʜᴀʀɢᴇs ᴀɴᴅ ᴛʜᴇ ᴄᴏsᴛ ᴏғ ғᴏᴏᴅ ᴘᴇʀ ᴅᴀʏ
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