P scored 40 marks more than Q in an examination. If Q scored 10% less marks than P, then how much did Q score.
360
380
400
420
P scored 40 marks more than Q. So, marks of Q are q, then the marks of P will be q + 40. Q scored 10% less marks than P. That is, marks of Q are 90% of the marks of P. So, q = 90% of (q + 40) Or 10q = 9q + 360 Or q = 360 So, Q scored 360 marks.
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