There are 165 marbles in a bag. 0.2 of them are silver marbles, and the rest are red and pink marbles. If there are 15 as many red marbles as pink marbles. How many pink marbles are there?
| Silver marbles |
Red marbles |
Pink marbles |
Total |
| 1 u |
4 u |
5 u |
| |
1 p |
5 p |
|
0.2 =
210 =
15 Fraction of marbles that are red and pink marbles
= 1 -
15 =
45 Total number of marbles = 5 u
5 u = 165
1 u = 165 ÷ 5 = 33
Number of red marbles and pink marbles
= 4 u
= 4 x 33
= 132
Number of red and pink marbles
= 1 p + 5 p
= 6 p
6 p = 132
1 p = 132 ÷ 6 = 22
Number of pink marbles
= 5 p
= 5 x 22
= 110
Answer(s): 110
