Question

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Answer 1

Answer:

Answer is ( a) options

20 years.

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Step-by-step explanation:

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Answer 2

Question :-

• The present age of sahil 's mother is three times the present age of sahil 's. After 5 years their ages will add to 66 years. Find sahil 's present ages.

Answer :-

• Present age of Sahil 's = 14 years

Solution :-

• Let present age of sahil = x years

• Let present age of Sahil 's mother = y years

We are given,

The present age of sahil's mother is three times the present age of sahil.

So ,

$\tt y = 3x$.......eq (1)

After 5 years their ages added to 66 years.

Therefore ,

After 5 years Sahil age = x + 5

After 5 years Sahil 's mother age = y + 5

Now ,

$\implies\tt x+5+y+5=66$

$\implies\tt x+y+10=66$

$\implies\tt x+y=66-10$

$\implies\tt x+y=56$.....eq (2)

From eq 1st and 2nd

$\implies\tt x+3x=56$

$\implies\tt 4x = 56$

$\implies\tt x = \dfrac{ \cancel{56}}{ \cancel4}$

$\implies\tt x=14 years$

Put x = 14 in eq 1st

$\implies\tt y=3x$

$\implies\tt y =3×14$

$\implies\tt y= 42years$

$\therefore$Present age of Sahil = 14 years

$\therefore$ Present age of sahil's mother = 42 years