If the average weight of 6 students is 50kg ;and that if other 2 students is 51 kg;and that of 2 other students is 55 kg; then the average weight of all students is;
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Step-by-step explanation:
Average weight of all students= 51.2Kg
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ᴛᴏᴛᴀʟ ᴡᴇɪɢʜᴛ ᴏғ 6 sᴛᴜᴅᴇɴᴛs = 6 * 50 = 300 kg
ᴛᴏᴛᴀʟ ᴡᴇɪɢʜᴛ ᴏғ 2 sᴛᴜᴅᴇɴᴛs = 2 * 51 = 102 kg
ᴛᴏᴛᴀʟ ᴡᴇɪɢʜᴛ ᴏғ 2 sᴛᴜᴅᴇɴᴛs = 2 * 55 = 110 kg
ᴛʜᴇʀᴇғᴏʀᴇ ᴀᴠᴇʀᴀɢᴇ ᴡᴇɪɢʜᴛ ᴏғ ᴀʟʟ sᴛᴜᴅᴇɴᴛs ɪs = ᴛᴏᴛᴀʟ ᴡᴇɪɢʜᴛ / ɴᴏ. ᴏғ sᴛᴜᴅᴇɴᴛs =
300+102+110 / 10 ᴋɢ
= 512 / 10 kg = 51.2 kg.
ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs ʏᴏᴜ.
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