There are 100 marbles in a bag. 0.2 of them are pink marbles, and the rest are red and silver marbles. If there are 14 as many red marbles as silver marbles. How many silver marbles are there?
| Pink marbles |
Red marbles |
Silver marbles |
Total |
| 1 u |
4 u |
5 u |
| |
1 p |
4 p |
|
0.2 =
210 =
15 Fraction of marbles that are red and silver marbles
= 1 -
15 =
45 Total number of marbles = 5 u
5 u = 100
1 u = 100 ÷ 5 = 20
Number of red marbles and silver marbles
= 4 u
= 4 x 20
= 80
Number of red and silver marbles
= 1 p + 4 p
= 5 p
5 p = 80
1 p = 80 ÷ 5 = 16
Number of silver marbles
= 4 p
= 4 x 16
= 64
Answer(s): 64
