Question

(1) 10 years ago, the sum of the ages of Sachin and his mother was x years. What will be the sum of their ages after y years?
(1) x + 10 + y
(2) x + 20 + y
(3) x + 10 + 2y
(4) x + 20 + 2y​

Answer 1

ᴀɴsᴡᴇʀ :-

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=> sᴜᴍ ᴏғ ᴀɢᴇs = x

=> ᴀғᴛᴇʀ 10 ʏᴇᴀʀs, ᴍᴏᴛʜᴇʀ's ᴀɴᴅ sᴀᴄʜɪɴ's ᴀɢᴇs ɪɴᴄʀᴇᴀsᴇᴅ ᴇǫᴜᴀʟʟʏ

=> sᴏ, ᴀғᴛᴇʀ 10 ʏᴇᴀʀs, ᴛʜᴇɪʀ ᴀɢᴇs sᴜᴍ ʙᴇᴄᴏᴍᴇ x + 20

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=> ᴀғᴛᴇʀ ʏ ʏᴇᴀʀs, ᴛʜᴇɪʀ ᴀɢᴇs ɪɴᴄʀᴇᴀsᴇᴅ ᴇǫᴜᴀʟʟʏ

=> sᴏ, sᴜᴍ ᴏғ ᴀɢᴇs ᴡɪʟʟ ʙᴇ

=> x + 20 + 2ʏ

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