ᴅᴜʀɪɴɢ ꜱᴀʟᴇꜱ ʜᴏᴜʀ ɪɴ ᴀ ꜱᴜᴘᴇʀᴍᴀʀᴋᴇᴛ, ᴄʏɴᴛʜɪᴀ ᴍᴇᴀꜱᴜʀᴇꜱ ʜᴇʀ ᴜʀɢᴇɴᴄʏ ꜰʀᴏᴍ ʙᴜʏɪɴɢ ᴢ ʙᴀɢꜱ ᴏꜰ ᴄᴀɴᴅɪᴇꜱ ᴀɴᴅ ʏ ʙᴀʀꜱ ᴏꜰ ᴄʜᴏᴄᴏʟᴀᴛᴇ ᴜꜱɪɴɢ ᴛʜᴇ ꜰᴏʟʟᴏᴡɪɴɢ ꜰᴜɴᴄᴛɪᴏɴ: ꜰ(x, ʏ) = √xʏ. ɪꜰ ᴄʏɴᴛʜɪᴀ ʜᴀꜱ ᴜꜱᴅ 5.00 ᴛᴏ ꜱᴘᴇɴᴅ ᴀɴᴅ ᴇᴀᴄʜ ʙᴀɢ ᴏꜰ ᴄᴀɴᴅɪᴇꜱ ᴀɴᴅ ᴇᴀᴄʜ ʙᴀʀ ᴏꜰ ᴄʜᴏᴄᴏʟᴀᴛᴇ ᴄᴏꜱᴛ ᴜꜱᴅ 1.50 ᴀɴᴅ ᴜꜱᴅ 1.00, ʀᴇꜱᴘ., ʜᴏᴡ ᴍᴀɴʏ ʙᴀɢꜱ ᴏꜰ ᴄᴀɴᴅɪᴇꜱ ᴀɴᴅ ʙᴀʀꜱ ᴏꜰ ᴄʜᴏᴄᴏʟᴀᴛᴇ ꜱʜᴏᴜʟᴅ ꜱʜᴇ ᴘᴜʀᴄʜᴀꜱᴇ ᴛᴏ ᴍᴀxɪᴍɪᴢᴇ ʜᴇʀ ᴜʀɢᴇɴᴄʏ? ᴜꜱᴇ ʟᴀɢʀᴀɴɢᴇ ᴏᴘᴛɪᴍɪᴢᴀᴛɪᴏɴ ᴛᴏ ꜱᴏʟᴠᴇ ᴛʜɪꜱ ᴘʀᴏʙʟᴇᴍ. (ɴᴏᴛᴇ: ꜰʀᴀᴄᴛɪᴏɴᴀʟ ɴᴜᴍʙᴇʀ ᴏꜰ ʙᴀɢꜱ ᴀɴᴅ ʙᴀʀꜱ ᴄᴀɴ ʙᴇ ᴘᴜʀᴄʜᴀꜱᴇᴅ.)