Question

A train can cover 56.75km in 1 hours how much distance will it cover in 11 hours​

Answer 1

●$\large\sf \bf \underline\purple{ your\: \: answer \: !!}$

Let the age of father be x years

Let the age of one of his children be y years and age of other children be z years

From given information,

x=2×(y+z)...(1)

After 20 years,

(x+20)=(y+20)+(z+20)...(2)

Substituting value of (1) in (2), we get

2×(y+z) +20=y+z+40

2y+2z−y−z=40−20

y+z=20...(3)

Substituting value of (3) in (1), we get

x=2×(20)

⇒x=40

Answer 2

Answer:

610.75 km i think it may be wrong pls don't mind it sis