Question

In a school which has a strength of 5500 students only 20% are girls. Find the number of boys
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Answer 1

5500×20/100

55×20

1100

Answer 2

Answer:

1.ᴛᴏᴛᴀʟ ɴᴜᴍʙᴇʀ ᴏꜰ ꜱᴛᴜᴅᴇɴᴛꜱ = 5500ᴩᴇʀᴄᴇɴᴛᴀɢᴇ ᴏꜰ ɢɪʀʟꜱ = 20%ɴᴜᴍʙᴇʀ ᴏꜰ ɢɪʀʟꜱ = 20% ᴏꜰ 5500 = 20100×5500 = 1100ꜱᴏ, ɴᴜᴍʙᴇʀ ᴏꜰ ʙᴏyꜱ = 5500 - 1100 = 44002.ᴍᴏɴᴛʜʟy ꜱᴀʟᴀʀy ᴏꜰ ᴀᴍɪᴛ = ʀꜱ 7800ʀᴀᴛᴇ ᴏꜰ ɪɴᴄʀᴇᴍᴇɴᴛ = 40%ɪɴᴄʀᴇᴍᴇɴᴛ = 40% ᴏꜰ 7800 = 40100×7800 = ʀꜱ 3120ꜱᴏ, ꜰɪɴᴀʟ ꜱᴀʟᴀʀy ᴏꜰ ᴀᴍɪᴛ = ʀꜱ 7800 + 3120 = ʀꜱ 10,920ᴍᴏɴᴛʜʟy ꜱᴀʟᴀʀy ᴏꜰ ꜱᴜᴍɪᴛ = ʀꜱ 8100ʀᴀᴛᴇ ᴏꜰ ɪɴᴄʀᴇᴍᴇɴᴛ = 50%ɴᴏᴡ, ɪɴᴄʀᴇᴍᴇɴᴛ = 50% ᴏꜰ 8100 = 50100×8100 = ʀꜱ 4050ɴᴏᴡ, ꜰɪɴᴀʟ ꜱᴀʟᴀʀy ᴏꜰ ꜱᴜᴍɪᴛ = ʀꜱ 8100 + 4050 = ʀꜱ 12,150ꜱᴏ, ꜱᴀʟᴀʀy ᴏꜰ ꜱᴜᴍɪᴛ ɪꜱ ᴍᴏʀᴇᴀʟʀᴇᴀᴅy ᴄʟᴏꜱᴇ.