Math, asked by thanya50, 1 year ago

(Question: 21)
21. At present a boy's father is 6 times
older and his grandfather 13 times
older than the boy. If six years later,
the grandfather will be seven times
older than the boy, what is the present
age of the boy's father?
1) 36 years 2) 42 years
3) 30 years 4) 48 years

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Answers

Answered by anmolt29
7

let present age of boy be x

ATQ,

father's age = 6x

grand father's age= 13x

also,

13x + 6= 7(x+6)

13x + 6= 7x + 42

6x = 36

x = 6.

Thus,

present age of father is (1)36 years


thanya50: thank you for your ans
anmolt29: your most welcome
Answered by NeelamG
4

option (1)= 36 years is ryt

let at present boy's age is = x years

father's age. = 6x

grandfather's age is = 13x

after 6 years

boy 's age will be= x + 6

grandfather's age will be = 13x + 6

and

grandfather will be 7 times older than boy

so, 13x+ 6= 7(x+6)

13x+6= 7x+ 42

13x-7x = 42-6

6x = 36

x= 6

hence boy's age at present = 6years

father's age at present= 6x = 6×6

= 36 years


thanya50: ok
NeelamG: yeah
NeelamG: what is the answer for this question
NeelamG: i want to confirm
NeelamG: i want to check my answer
thanya50: 600m
NeelamG: okay
thanya50: hiii
thanya50: thanya here
thanya50: hw r u
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