There are 190 balls in a bag. 0.1 of them are silver balls, and the rest are red and green balls. If there are 18 as many red balls as green balls. How many green balls are there?
| Silver balls |
Red balls |
Green balls |
Total |
| 1 u |
9 u |
10 u |
| |
1 p |
8 p |
|
0.1 =
110 =
110 Fraction of balls that are red and green balls
= 1 -
110 =
910 Total number of balls = 10 u
10 u = 190
1 u = 190 ÷ 10 = 19
Number of red balls and green balls
= 9 u
= 9 x 19
= 171
Number of red and green balls
= 1 p + 8 p
= 9 p
9 p = 171
1 p = 171 ÷ 9 = 19
Number of green balls
= 8 p
= 8 x 19
= 152
Answer(s): 152
