Question

If the sum of the ages of two sisters 3 years ago was 36 years then their sum of the ages after 4 years will be
(a) 30
(b) 40
(c) 50
(d) 54​

Answer 1

Step-by-step explanation:

present age of sisters =x,y

then 3years ago sum of their ages

x-3+y-3=36

x+y=42

sum of ages after 4years =x+4+y+4=x+y+8=50

Answer 2

Answer:

46

Step-by-step explanation:

Let the present ages of both the sisters be X and Y.

therefore, their age before 3 years will be (X - 3) years and (y - 3) years.

So by given condition we get,

(X - 3) + (y - 3) = 36

x - 3 + y - 3 = 36

x + y - 6 = 36

So, x + y = 42

that means, the sum of present ages will be 42

Now, their ages 4 years hence will be (x +4) years and (y + 4) years. Also sum of those ages will be (42. + 4) i.e. 46