The ratio of pink marbles to white marbles in Samara’s bag is equal to 1:4. What percent of the bag contains pink marbles?
a 12.5% c 25%
b 20% d 50%
1/(1+4) = ___
To find the percentage of the bag that contains pink marbles, we need to determine the proportion of pink marbles in relation to the total number of marbles.
Given that the ratio of pink marbles to white marbles is 1:4, we can assume that for every 1 part of pink marbles, there are 4 parts of white marbles.
So, the total ratio of pink marbles to the whole bag is 1 + 4 = 5 (1 part pink marbles + 4 parts white marbles).
To find the percentage, we divide 1 by 5 and then multiply by 100:
(1 / 5) * 100 = 20
Therefore, the percentage of the bag that contains pink marbles is 20%.
So, the answer is b) 20%.
To find the percent of the bag that contains pink marbles, we need to determine the ratio of the number of pink marbles to the total number of marbles in the bag.
Given that the ratio of pink marbles to white marbles is 1:4, we can assume that the total ratio of marbles in the bag is 1+4 = 5.
Now, to find the percentage, we need to find the contribution of the pink marbles to the total ratio, which is 1/5.
To convert this ratio to a percentage, we can multiply it by 100.
Therefore, the percentage of the bag that contains pink marbles is 1/5 * 100 = 20%.
Hence, the correct answer is option b) 20%.