Question

Q11. Present ages of Sasha and Manisha are in the
ratio 4:5. Eight years from now, the ratio of their
ages will be 5: 6 find their present ages.​

Answer 1

Answer:

Volume of a cylinder=πr^2h

So,it is given that

Radius of smaller cylinder/ radius of bigger cylinder= 2/3

Therefore,radius of smallest cylinder=2x

Radius of bigger cylinder=3x

Also,

Height of smaller cylinder/ height of bigger cylinder=5/3= 5y/3y.

Now,ratio =

π (2x)^2 (5y) /π (3x)^2 (3y)

=5(4x^2)/3(9x^2)

=20/27

Step-by-step explanation:

Volume of a cylinder=πr^2h

So,it is given that

Radius of smaller cylinder/ radius of bigger cylinder= 2/3

Therefore,radius of smallest cylinder=2x

Radius of bigger cylinder=3x

Also,

Height of smaller cylinder/ height of bigger cylinder=5/3= 5y/3y.

Now,ratio =

π (2x)^2 (5y) /π (3x)^2 (3y)

=5(4x^2)/3(9x^2)

=20/27

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Vikas Rathore, Mankind from Earth

Answered February 4, 2017 · Author has 96 answers a

Answer 2

☆ Question ☆

Present ages of Sasha and Manisha are in the ratio 4:5. Eight years from now, the ratio of their ages will be 5: 6 . Find their present ages.

☆ Solution ☆

☆ Given ☆

• Present ages of Sasha and Manisha are in the ratio 4:5. Eight years from now, the ratio of their ages will be 5: 6.

☆ To Find ☆

• Their present ages.

☆ Step-by-Step-Explaination ☆

Let Sasha present age = 4x years

Manisha present age = 5x years

Eight years later, Sasha age = ( 4x + 8 ) years

Manisha age = ( 5x + 8 ) years

According to the question, we have

$\frac{4x + 8}{5x + 8} = \frac{5}{6}$

By cross multiplication, we have

6 ( 4x + 8 ) = 5 ( 5x + 8 )

= 24x + 48 = 25x + 40

= 48 - 40 = 25x - 24x

= 8 = x

Therefore, Sasha present age = 5x years = ( 4 × 8 ) years = 32 years.

Manisha present age = 5x years = ( 5 × 8 ) years = 40 years.