nine hundred and twenty seven spectators attended a concert . twi thirds of them were children . each child paid rs 80 . if a child paid half as an adult , how much did the spectators paying in all ?
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ᴄʜᴀɪɴ ꜱɪʟɪᴄᴀᴛᴇꜱ ᴀʀᴇ ꜰᴏʀᴍᴇᴅ ʙy ꜱʜᴀʀɪɴɢ ᴛᴡᴏ ᴏxyɢᴇɴ ᴀᴛᴏᴍꜱ ʙy ᴇᴀᴄʜ ᴛᴇᴛʀᴀʜᴇᴅʀᴏɴ.
ᴀɴɪᴏɴꜱ ᴏꜰ ᴄʜᴀɪɴ ꜱɪʟɪᴄᴀᴛᴇ ʜᴀᴠᴇ ᴛᴡᴏ ɢᴇɴᴇʀᴀʟ ꜰᴏʀᴍᴜʟᴀ :
(ɪ) (ꜱɪᴏ32−)ɴ (ɪɪ) (ꜱɪ4ᴏ116−)ɴ
ꜰᴏʀ ᴇxᴀᴍᴩʟᴇ, ꜱᴩᴏᴅᴜᴍᴇɴᴇ ʟɪᴀʟ(ꜱɪᴏ3)2; ᴇɴꜱᴛᴀᴛɪᴛᴇ ᴍɢꜱɪᴏ3 ᴀʀᴇ ᴩyʀᴏxᴇɴᴇ ᴛyᴩᴇ ᴄʜᴀɪɴ ꜱɪʟɪᴄᴀᴛᴇꜱ.
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