In an exam a student secured 30%and failed by 15 Mark's.If 40%mrks is required to pass then the maximum mrks are?????
Plz tell with solution very fast
Tommorow my exam
Answers
Answered by
8
let total marks be x
=> 30x/100 + 15 = 40x/100
=> 30x + 1500 /100 = 40x/100
=> 100 ( 30x + 1500 ) = 100 × 40x
=> 3000x + 150000 = 4000x
=> 3000x - 4000x = - 150000
=> -1000x = - 150000
=> x = 150000/1000 = 150
HENCE EXAM'S TOTAL MARK IS 150.
AND PLZ MARK ME AS BRAINLEIST.
=> 30x/100 + 15 = 40x/100
=> 30x + 1500 /100 = 40x/100
=> 100 ( 30x + 1500 ) = 100 × 40x
=> 3000x + 150000 = 4000x
=> 3000x - 4000x = - 150000
=> -1000x = - 150000
=> x = 150000/1000 = 150
HENCE EXAM'S TOTAL MARK IS 150.
AND PLZ MARK ME AS BRAINLEIST.
Similar questions