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A sack contains red and blue marbles The ratio of red marbles to blue marbles is 4 to 3 If there are 16 red marbles in the sack how many blue marbles are in the sack?
12 blue marbles
A sack contains red and blue marbles The ratio of red marbles to blue marbles is 4 to 3 If there are 18 blue marbles in the sack how many red marbles are in the sack?
24
What is the probability of selecting 4 red or 5blue marbles?
The probability of selecting 4 red marbles or 5 blue marbles depends on how many marbles there are altogether, and how many of the total number of marbles are red and how many are blue.
What is the number of each colour of marbles in a bag of 76 marbles if the ratio of red marbles to green marbles is 2 to 3 and the ratio of green marbles to blue marbles is 9 to 4?
The ratios are: red : green = 2 : 3 = (2×3) : (3×3) = 6 : 9 green : blue = 9 : 4 → ratio of red : green : blue = 6 : 9 : 4 There are 6 + 9 + 4 = 19 parts 76 marbles ÷ 19 parts = 4 marbles per part → red: 6 parts = 6 × 4 marbles per part = 24 red marbles → green: 9 parts = 9 × 4 marbles per part = 36 green marbles → blue: 4 parts = 4 × 4 marbles per part = 16 blue marbles To check: red + green + blue = 24 marbles + 36 marbles + 16 marbles = 76 marbles in the bag.
1 Sonya has a bag of 54 different-colored marbles The marbles are blue red and green and are on the ratio 4 3 2 How many marbles does Sonya have that are a red blue?
Sonya has no red blue marbles. All she has are 24 blue, 18 red and 12 green.
