There are 200 marbles in a basket. 0.3 of them are black marbles, and the rest are pink and yellow marbles. If there are 37 as many pink marbles as yellow marbles. How many yellow marbles are there?
| Black marbles |
Pink marbles |
Yellow marbles |
Total |
| 3 u |
7 u |
10 u |
| |
3 p |
7 p |
|
0.3 =
310 =
310 Fraction of marbles that are pink and yellow marbles
= 1 -
310 =
710 Total number of marbles = 10 u
10 u = 200
1 u = 200 ÷ 10 = 20
Number of pink marbles and yellow marbles
= 7 u
= 7 x 20
= 140
Number of pink and yellow marbles
= 3 p + 7 p
= 10 p
10 p = 140
1 p = 140 ÷ 10 = 14
Number of yellow marbles
= 7 p
= 7 x 14
= 98
Answer(s): 98
