There are 110 balls in a bag. 0.3 of them are yellow balls, and the rest are gold and silver balls. If there are 38 as many gold balls as silver balls. How many silver balls are there?
| Yellow balls |
Gold balls |
Silver balls |
Total |
| 3 u |
7 u |
10 u |
| |
3 p |
8 p |
|
0.3 =
310 =
310 Fraction of balls that are gold and silver balls
= 1 -
310 =
710 Total number of balls = 10 u
10 u = 110
1 u = 110 ÷ 10 = 11
Number of gold balls and silver balls
= 7 u
= 7 x 11
= 77
Number of gold and silver balls
= 3 p + 8 p
= 11 p
11 p = 77
1 p = 77 ÷ 11 = 7
Number of silver balls
= 8 p
= 8 x 7
= 56
Answer(s): 56
