Mathematics, 23.06.2021 15:20 Kkgiddy

In an exam 70%of the kids passed in science 75%in math and 10% of them failed in both subject. If 220 kids passed in both subject. Find the total number of students.

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In an exam 70%of the kids passed in science 75%in math and 10% of them failed in both subject. If 22...