There are 120 marbles in a bag. 0.5 of them are white marbles, and the rest are green and pink marbles. If there are 15 as many green marbles as pink marbles. How many pink marbles are there?
| White marbles |
Green marbles |
Pink marbles |
Total |
| 1 u |
1 u |
2 u |
| |
1 p |
5 p |
|
0.5 =
510 =
12 Fraction of marbles that are green and pink marbles
= 1 -
12 =
12 Total number of marbles = 2 u
2 u = 120
1 u = 120 ÷ 2 = 60
Number of green marbles and pink marbles
= 1 u
= 1 x 60
= 60
Number of green and pink marbles
= 1 p + 5 p
= 6 p
6 p = 60
1 p = 60 ÷ 6 = 10
Number of pink marbles
= 5 p
= 5 x 10
= 50
Answer(s): 50
