Question

A jar contains 30 Marbles of which 17 are blue 4 are red and the rest are green. what is the ratio of the blue marbles to red Marbles to the green marble?​

Answer 1

total number of marble in jar => 30

number of marble which are blue => 17

number of marble which are red => 4

number of marble which are green =>

(total number of marble) - ( Blue marble +red marble)

=> 30-( 17+4)

=> 30-21

=> 9

hence the number of marble which are green => 7

to find : Blue marble: red marble: green marble

=> 17:4:9

hence it is your answer........