In a box, 50% of the cards are black, 15% are red and the rest are silver
- What fraction of the cards is silver? Give your answer in the simplest form.
- There are 679 silver cards in the box. How many cards are there in the box altogether?
(a)
Percentage of cards that are silver
= 100% - 50% - 15%
= 35%
Fraction of cards that are silver
=
35100 =
720 (b)
Number of silver cards = 7 u
7 u = 679
1 u = 679 ÷ 7 = 97
Total number of cards
= 20 u
= 20 x 97
= 1940
Answer(s): (a)
720; (b) 1940