Question

Manoj's income increased by 20% and then decreased by 20% . What is the total percentage change in Manoj's income ?​

Answer 1

Answer:

Increased=120%

Decresed=120-20% of 120

120-24=96%

Net decrese=100%-96%=4%

Answer 2

Explanation:

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ᴍᴀɴᴏᴊ ɪɴᴄᴏᴍᴇ ɪɴᴄʀᴇᴀsᴇᴅ ʙʏ 20% ᴀɴᴅ ᴛʜᴇɴ ᴅᴇᴄʀᴇᴀsᴇᴅ ʙʏ 20% . ᴡʜᴀᴛ ɪs ᴛʜᴇ ᴛᴏᴛᴀʟ ᴘᴇʀᴄᴇɴᴛᴀɢᴇ ᴄʜᴀɴɢᴇ ɪɴ ᴍᴀɴᴏᴊ's ɪɴᴄᴏᴍᴇ .

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ᴛʜᴇ ᴛᴏᴛᴀʟ ᴘᴇʀᴄᴇɴᴛᴀɢᴇ ᴄʜᴀɴɢᴇ ɪɴ ᴍᴀɴᴏᴊ's ɪɴᴄᴏᴍᴇ.

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ɢɪᴠᴇɴ :-

ɪɴᴄʀᴇᴀsᴇᴅ ʙʏ 20%

ᴅᴇᴄʀᴇᴀsᴇᴅ ʙʏ 20%

ʟᴇᴛ ᴛʜᴇ ᴛᴏᴛᴀʟ ɪɴᴄᴏᴍᴇ ʙᴇ 100

ɪɴ ғʀɪsᴛ ᴄᴀsᴇ ɪɴᴄʀᴇᴀsᴇᴅ = 20% ᴏғ 100

= 20

Iɴᴄᴏᴍᴇ ᴀғᴛᴇʀ ᴛʜɪs = 100 + 20 = 120

ɪɴ sᴇᴄᴏɴᴅ ᴄᴀsᴇ ᴅᴇᴄʀᴇᴀsᴇᴅ = 20 % ᴏғ 120

$\frac{20}{100} \times 124$

$24$

ɪɴᴄᴏᴍᴇ ᴀғᴛᴇʀ ᴛʜᴇ ᴅᴇᴄʀᴇᴀsᴇ = 120 - 24 = 96

ᴅᴇᴄʀᴇᴀsᴇᴅ ɪɴ ᴡʜᴏʟᴇ ɪɴᴄᴏᴍᴇ = 24 - 20 = 4

ᴘᴇʀᴄᴇɴᴛᴀɢᴇ ᴄʜᴀɴɢᴇ = 4/100 × 100 = 4%

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