Ravi 's age is three times that of Gaurav 's. After 18 years Ravi will be twice as old as Gaurav . What are their present ages?

They both aren't born yet. Ravi is -54 years old, and Gaurav is -18 years old.

Step-by-step explanation:

r=3g

r+18=2g

Substitute 3g for r

3g+18=2g

18=-1g

-18=g

r=(-18)*3=-54

This one strikes me as an odd one, but my working is correct, you can see that for yourself. Hope this helps and please tell me if this was the correct answer.

y=x+9

?

step-by-step explanation:

region b will make the inequalities y < 2x + 1 and y > -x - 2 true ⇒ answer a

step-by-step explanation:

* lets study the graph and the inequality to solve the question

- the inequality y > -x - 2

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = -2 that means the line intersect the y-axis at point (0 , -2)

∵ the sign of the inequality is >

∴ we shad the part over the line

  region a and b

- the inequality y < 2x + 1

∵ the form of the inequality is y > mx + c , m is the slope of the line

  and c is the y-intercept (the line intersect y-axis at point (0 , c)

∴ c = 1 that means the line intersect the y-axis at point (0 , 1)

∵ the sign of the inequality is <

∴ we shad the part under the line

  region b and c

∵ the common region between the two lines is region b

∴ region b will make the inequalities y < 2x + 1 and y > -x - 2 true