Correct Answer - Option 5 : 10 : 7
Given:
Let salary of P and Q be Rs.20a and Rs.21a respectively.
Calculation:
⇒ 21a - 20a = 2000
⇒ a = 2000
The monthly salary of P and Q is Rs.40000 and Rs.42000 respectively.
⇒ Expenditure of Q = 42000 - 14000 = Rs.28000
Then,
⇒ (Expenditure of P) : 28000 = 5 : 7
⇒ Expenditure of P = 28000 × 5/7 = Rs.20000
⇒ Savings of P = 40000 - 20000 = Rs.20000
Required ratio = 20000 : 14000 = 10 : 7
∴ the correct answer is 10 : 7