Answer:
4 years
Explanation:
Let x be the age ( in years ) of each daughters,
∵ Mother is 30 years older than her daughters,
⇒ Age of the mother = x + 30
Now, after 2 years,
The age of each daughter = x + 2,
And, the age of the mother = x + 30 + 2 = ( x + 32 ) years,
According to the question,
3(x+2+x+2) = x + 32
3(2x+4) = x + 32
6x + 12 = x + 32
5x = 20
⇒ x = 4
Hence, each of the daughters is 4 years old.
The correct answer is - c. it encouraged written language so that records could be kept.
The development of agriculture enabled people to settle in at one place instead of having a nomadic life. This way of life and the sufficient amount of food enabled the people to focus on other things, one of which was the invention of the written language which allowed the people to be able to express themselves better, or to preserve records over time, to provoke the creativity in them...
