in a class test of 30 question 5 marks are given for every correct answer and (-2) marks are given for every in correct answer Rehana answered all question but only 18th her answer where correct to find total her score
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she gets 66 marks
total marks = 30×5=150
corrected marks=18×5=90
incorrected marks=12×-2=-24
total obtained marks=90-24=66
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Answer:
A STORE GROCER MADE A PROFIT OF 470 ON MONDAY A LOSS OF 120 ON TUESDAY AND A LOSS OF 80 ON WEDNESDAY FIND HIS NET PROFIT OR LOSS IN THREE DAYS
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