assume there are 4 families in a country the average per capita income of these families is rupees 5000 if the income of three families is rupees 4000 rupees 7000 rupees 3000 respectively what is the income of for family
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1
Answer:
9000
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ʟᴇᴛ ɪɴᴄᴏᴍᴇ ᴏғ ғᴏᴜʀᴛʜ ғᴀᴍɪʟʏ = x
ᴀᴠᴇʀᴀɢᴇ ᴘᴇʀ ᴄᴀᴘɪᴛᴀ ɪɴᴄᴏᴍᴇ = ᴛᴏᴛᴀʟ ɪɴᴄᴏᴍᴇ 4000+7000+3000+x
------------------ = ----------------------------
ᴛᴏᴛᴀʟ ғᴀᴍɪʟɪᴇs 4
5000=4000+7000+3000+x
---------------------------
4
5000*4=14000+x
20000-14000=x
x= 6000
ʜᴇɴᴄᴇ, ɪɴᴄᴏᴍᴇ ᴏғ ғᴏᴜʀᴛʜ ғᴀᴍɪʟʏ = 6000
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