Christina collects stamps. She has 47 stamps in all. She has 20 stamps from Europe. The number of African stamps is 2 times the number of Asian stamps. How many stamps from each of these three continents does she have?

To find how many stamps Christina has from each continent, we can set up a system of equations using the given information.
Christina has 20 stamps from Europe, 9 stamps from Asia, and 18 stamps from Africa. ;

Answered by JeffBridges | 2024-06-18

x − A s ian s t am p s 2 x − A f r i c an s t am p s 47 − 20 = 27 x + 2 x = 27 3 x = 27 ∣ : 3 x = 9 2 x = 18 He ha v e 20 s t am p s f ro m E u ro p e , 9 f ro m A s ia an d 18 f ro m A f r i c a .

Answered by luana | 2024-06-24

Christina has 20 stamps from Europe, 9 stamps from Asia, and 18 stamps from Africa. The total number of stamps adds up to 47, satisfying the conditions of the problem. The relationship between the stamps from Africa and Asia is maintained as stated in the question.
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Answered by luana | 2024-12-16