Question

the square of sreeja's age is 3 years will be 225 calculate her present age
a) 15
b) 12
c) 18
d) 14

Answer 1

Answer:

(b) 12

Step-by-step explanation:

Let her present age be x years.

Therefore, by condition, 3 years after her age will be (x + 3) years and square of her age after 3 years = 225.

Therefore,

${(x + 3)}^{2} = 225$

=

$x \: + 3 \: = \sqrt{225}$

=

$x \: + \: 3 = 15$

=

$x \: = 15 - 3$

=

$x \: = 12$

Hence, option (b) 12 is correct.