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MATHEMATICS

JAMB 2008 - Question 11

Mathematics 2008 JAMB Past Questions - Question 11: A bookseller sells Mathematics and English books if 30 customers buy Mathematics books,20 customers buy English books and 10 customers buy the two books ,how many customers has he altogether?

A bookseller sells Mathematics and English books if 30 customers buy Mathematics books,20 customers buy English books and 10 customers buy the two books ,how many customers has he altogether?

A: 30

B: 40

C: 50

D: 60

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Correct Answer

Explanation

n =20 +10 +10n = 40