IBPS PO Exam 2012 Solved Paper

Let amount of B = ₹ x
B’s Share without error =

B′s‌ratio

Total‌ratio

×Total‌amount
x =

3

9

×Amount ... (1)
B’s share after error =

B′s‌new‌ratio

Total‌new‌ratio

×Total‌amount
x - 40 =

2

14

× Total amount ... (2)
From equation (1) and (2)
3x = 7(x–40)
3x – 7x = –280
∴ x = 70
Total Amount = 7 (70 – 40) = ₹ 210