IBPS PO Prelims 2015 Solved Paper

The difference between two nearest values is 70 (210 and 280). So round off the numbers to the nearest integers.
29.8% of 260 ~ 30% of 260; 60.01% of 510 ~ 60% of 510 and 103.57 ~104
Now the equation will become
30% of 260 + 60% of 510 – 104 = ?
30/100 × 260 + 60/100 × 510 – 104 = ?
78 + 306 – 104 = ?
? = 384 – 104 = 280