There are 150 marbles in a bag. 0.4 of them are pink marbles, and the rest are silver and brown marbles. If there are 14 as many silver marbles as brown marbles. How many brown marbles are there?
Pink marbles |
Silver marbles |
Brown marbles |
Total |
2 u |
3 u |
5 u |
|
1 p |
4 p |
|
0.4 =
410 =
25 Fraction of marbles that are silver and brown marbles
= 1 -
25 =
35 Total number of marbles = 5 u
5 u = 150
1 u = 150 ÷ 5 = 30
Number of silver marbles and brown marbles
= 3 u
= 3 x 30
= 90
Number of silver and brown marbles
= 1 p + 4 p
= 5 p
5 p = 90
1 p = 90 ÷ 5 = 18
Number of brown marbles
= 4 p
= 4 x 18
= 72
Answer(s): 72