Question

Rita has 400 stamps in her collection. 1/10th of them were Indian stamps, of the remaining 1/3 were from European, and 100 stamps were from Africa. The rest were from USA. How many Americans stamps were there

Answer 1

Total stamps = 400 (Given)

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Find Indian stamps:

Indian stamp = 1/10 x 400 = 40

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Find remaining stamps:

Remaining = 400 - 40 = 360

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Find European stamps:

European stamps =1/3 x 360 = 120

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Find remaining stamps:

Remaining = 360 - 120 = 240

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Find African stamps:

African stamps = 100 (Given)

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Find remaining stamps:

Remaining (American stamps) = 240 - 100 = 140

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Answer: There are 140 American stamps

Answer 2

Indian stamps = 1/10 × 400 = 40 stamps
European stamps = (400-40) × 1/3 = 360 × 13 = 120 stamps
African stamps = 100
U.S.A. or American stamps = 400 - ( 40 + 120 + 100) = 400 - 260 = 140 stamps

Therefore, American stamps were 140 in number.

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