Question

nnbgjg Dr TN h CCTV h TGIF fox SUV hi​

Answer 1

Answer:

What is this Mr panav??

First tell please

Answer 2

A᭄ɴsᴡᴇʀ࿐ :−

★ɢɪᴠᴇɴ :

❈The combined age of husband and wife are three times the combined ages of their children. Three years ago the ratio of their ages was 4 : 1, while 5 years after the ratio will be 20:9.

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★ᴛᴏ ғɪɴᴅ :

How many children have they?

★Sᴏʟᴜᴛɪᴏɴ:

⇨Let say number of children = n

⇨Combined Age of n Children = A

Combined ᴀɢᴇ of ʜusband and ᴡiғe = 3A

◈Tʜʀᴇᴇ years ago combined age of ʜusband and ᴡife

☛ = 3A - 2 * 3 = 3A - 6

◈Tʜʀᴇᴇ years ago combined age Combined Age of n Children

☛ = A - n * 3 = A - 3n

⇢ᴛʜʀᴇᴇ ʏᴇᴀʀs ᴀɢᴏ ᴛʜᴇ ʀᴀᴛɪᴏ ᴏғ ᴛʜᴇɪʀ ᴀɢᴇs ɪs ᴡᴀs 4:1

⇛ 3A - 6 = 4(A - 3n)

⇛ 3A - 6 = 4A - 12n

⇛A = 12n - 6

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◈5 ʏears After combined age of husband and wife

✑ = 3A+ 2 * 5 = 3A+10

◈5 ʏears After combined age Combined Age of n Children

✑ = A+ n * 5 = A +5n

⇢5 ʏᴇᴀʀs ᴀғᴛᴇʀ ᴛʜᴇ ʀᴀᴛɪᴏ ᴡɪʟʟ ʙᴇ 20:9

⇝9(3ᴀ + 10) = 20(A + 5n)

⇝ 27ᴀ +90 = 20ᴀ+100n

⇝ 7ᴀ = 100n-90

⇛12n - 6

⇝ 7 (12n - 6) = 100n-90

⇝ 84n - 42 = 100n-90

⇝ 16n =48

»n = 3

ɴᴜᴍʙᴇʀ ᴏғ ᴄʜɪʟᴅʀᴇɴ = 3

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