There are 200 marbles in a bag. 0.3 of them are blue marbles, and the rest are purple and green marbles. If there are 37 as many purple marbles as green marbles. How many green marbles are there?
| Blue marbles |
Purple marbles |
Green marbles |
Total |
| 3 u |
7 u |
10 u |
| |
3 p |
7 p |
|
0.3 =
310 =
310 Fraction of marbles that are purple and green marbles
= 1 -
310 =
710 Total number of marbles = 10 u
10 u = 200
1 u = 200 ÷ 10 = 20
Number of purple marbles and green marbles
= 7 u
= 7 x 20
= 140
Number of purple and green marbles
= 3 p + 7 p
= 10 p
10 p = 140
1 p = 140 ÷ 10 = 14
Number of green marbles
= 7 p
= 7 x 14
= 98
Answer(s): 98
