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

  • Deepshikha
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Your Answer

step : 280*x/100 + 18/100*550=143.8

14*x/5 +99=143.8

14*x/5=44.8

14*x=224

x=16

26

  • Suppose 1% = 550÷100 =5.5 And 5.5×18 = 99 Then 143.8-99=44.8 Next 44.8×100÷250 =16 It Means 16% Of 280

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