1.

200 and 180 students of school A & B passed the exam. 20% and 10% students from A and B did not pass the exam. How many students appeared in the exam from both the schools?1). 4202). 3603). 4504). 400

Answer»

Number of students of school A who passed the exam = 200

PERCENT of students of school A who did not pass the exam = 20%

⇒ Percent of students of school A who pass the exam = 80%

⇒ 80% students of school A= 200

TOTAL students in school A = 250

Number of students of school B who passed the exam = 180

Percent of students of school B who did not pass the exam = 10%

⇒ Percent of students of school B who pass the exam = 90%

⇒ 90% students of school B= 180

⇒ Total students in school B = 200

⇒ Total students in both the exam = 450

∴ 450 students appeared in the exam from both the SCHOOLS


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