Amother is 30 years older than her twin daughters. in 2 years her age will be three times the combined ages of the twins. how old are the twins right now ?

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.

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.