There are 200 balls in a box. 0.1 of them are gold balls, and the rest are silver and pink balls. If there are 37 as many silver balls as pink balls. How many pink balls are there?
| Gold balls |
Silver balls |
Pink balls |
Total |
| 1 u |
9 u |
10 u |
| |
3 p |
7 p |
|
0.1 =
110 =
110 Fraction of balls that are silver and pink balls
= 1 -
110 =
910 Total number of balls = 10 u
10 u = 200
1 u = 200 ÷ 10 = 20
Number of silver balls and pink balls
= 9 u
= 9 x 20
= 180
Number of silver and pink balls
= 3 p + 7 p
= 10 p
10 p = 180
1 p = 180 ÷ 10 = 18
Number of pink balls
= 7 p
= 7 x 18
= 126
Answer(s): 126
