A bag contains yellow, green, blue, and white marbles in the ratio 4:2:3:8 . If the bag contains 18 green marbles, then how many blue marbles are there?
+37162 Green is 2 out of ( 4+2+3+8) = 2 out of 17
18 is to 2/17 as x is to 3/17 ( 3/17 is th eblue portion)
18/ ( 2/17) = x / (3/17)
3/17 * 18 / ( 2/17) = x = 27 blue
+37162 Green is 2 out of ( 4+2+3+8) = 2 out of 17
18 is to 2/17 as x is to 3/17 ( 3/17 is th eblue portion)
18/ ( 2/17) = x / (3/17)
3/17 * 18 / ( 2/17) = x = 27 blue
