What should come in place of the question mark (?) in the following questions?
?% of 280 + 18% of 550 = 143.8 (a) 11 (b) 18 (c) 21 (d) 16 (e) None of these
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Trick to calculate these question fast. 10% of 550= 55 1% of 550= 5.5 To calculate 18% = 20% -2% I.e 55*2 -11= 99 x% of 280= 143.8-99 x% of 280= 44.5 This eq can be solved easily or even we can do estimate 10% of 280= 28 5%of 280= 28/2= 14 1%of 280= 2.8 Adding them give you 44.8= 16% Hence the answer is 16%
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ibps po prelim exam