Question

The ratio of pink marbles to white marbles in Samaras bag is equal to 1:5. What percent of the bag contains pink marbles

Answer 1

A percentage is a ratio with a comparison to 100. So if you were writing it out it would be
X:100 or X/100
Since we have
pink:white = 1:5 or 1/5 all we have to do is multiply by a number that will give us 100 in the denominator.

1/5 × 20/20 = 20/100

20/100 = .20 = 20%

The bag contains 20% pink marbles.

Answer 2

16.67%

Explanation:

If the ration of pink marbles to white marbles is 1:5, it means that for every 5 white marbles the bag contains 1 pink marble. Therefore if we assume the total amount of marbles are 1 pink marble + 5 white marbles = 6 marbles we can determine the percent of pink marbles in the bag:

`=(1/6)*100=16.67%`

Therefore 16.67% of the bag contains pink marbles