A's income is Tk. 140 more than B's income and C's income is Tk 80 more than D's. If the ratio of A's and C's income is 2 : 3 and the ratio of B's and D's income is 1 : 2, then the incomes of A, B, C and D are respectively

A : C = 2 : 3 or 2x : 3x
B : D = 1 : 2 or y : 2y
According to question,
2x - 140 = y .... (i)
3x - 80 = 2y .... (ii)

multiply equation (i) by 2 and solved
4x - 280 - 3x + 80 = 2y - 2y
⇒ x - 200 = 0
⇒ x = 200

Now put value of x in equation (i)
(2 × 200) - 140 = y
⇒ 400 - 140 = y
⇒ y = 260

A's salary = 2x = Tk. 400
B's salary = y = Tk. 260
C's salary = 3x = Tk. 600
D's Salary = 2y = Tk. 520