Question

The Ratio of Marbles is 3 green: 7 blue: 5 red. If a bag of marbles has 225 marbles in it,

how many green would you expect in the bag?

Answer 1

45 green marbles

Explanation:

Green : Blue : Red = 3 : 7 : 5

Fraction of green marbles =
`(3)/(3+7+5)=(3)/(15)`

Total marbles = 225

Number of green marbles =
`(3)/(15)*225`

= 3 * 15

= 45