Question

There are 1800 stamps in a collection. 70% of the stamps are local stamps and the rest are foreign stamps. How many foreign stamps are there in the collection?

450 stamps

550 stamps

580 stamps

540 stamps


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Answer 1

D (last one)

Explanation:

70/100 x 1800

= 1260 local stamps

1800 - 1260

= 540 foreign stamps

Answer 2

540 stamps

Explanation:

Percentage of foreign stamps = (100-70)% = 30%

Number of foreign stamps = 30% of 1800

`=(30)/(100)*1800\\\\=30*18\\= 540`