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A jar contains 10 red marbels and 30 green ones How many red marbels must be added to the jar so that 60 percent of the marbels will be red?
Let ( x ) be the number of red marbles to be added. Initially, there are 10 red marbles and 30 green marbles, making a total of 40 marbles. After adding ( x ) red marbles, the total number of marbles will be ( 40 + x ), and the number of red marbles will be ( 10 + x ). To find ( x ), we set up the equation: [ \frac{10 + x}{40 + x} = 0.6 ] Solving this equation gives ( x = 20 ). Therefore, 20 red marbles must be added to have 60% red marbles in the jar.
Jerry has a total of 23 marbles the marbles are either blue or green he has three more blue marbles than green marbles how many marbles does he have?
He will have 13 blue marbles and 10 green marbles.
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.
What is the probability of getting a green marble?
To determine the probability of getting a green marble, you need to know the total number of marbles and the number of green marbles specifically. The probability is calculated by dividing the number of green marbles by the total number of marbles. For example, if there are 5 green marbles out of 20 total marbles, the probability would be 5/20, which simplifies to 1/4 or 25%.
If there are 50 marbles 15 are blue 8 are yellow and 27 are red what is the probability of green?
There are 15 blue marbles, 8 yellow marbles and 27 red marbles for a total of 50 marbles. Since there are no green marbles in the lot, It is impossible to pull a green marble from the lot. The is no probability whatsoever! "There just ain't no green ones to pull."
A jar contains 10 red marbels and 30 green ones How many red marbels must be added to the jar so that 60 percent of the marbels will be red?
Let ( x ) be the number of red marbles to be added. Initially, there are 10 red marbles and 30 green marbles, making a total of 40 marbles. After adding ( x ) red marbles, the total number of marbles will be ( 40 + x ), and the number of red marbles will be ( 10 + x ). To find ( x ), we set up the equation: [ \frac{10 + x}{40 + x} = 0.6 ] Solving this equation gives ( x = 20 ). Therefore, 20 red marbles must be added to have 60% red marbles in the jar.
Erry has a total of 23 marbles The marbles are either blue or green He has three more blue marbles than green marbles How many green marbles does he have?
He has 10 green marbles.
Jerry has a total of 23 marbles the marbles are either blue or green he has three more blue marbles than green marbles how many marbles does he have?
He will have 13 blue marbles and 10 green marbles.
Jerry has a total of 23 marbles The marbles are either blue or green He has three more blue marbles than green marbles How many blue marbles does he have?
10 Green marbles, 13 Blue marbles.
A bag of marbles has twice as many blue marbles as green and the bag has at least 33 marbles in it at least how many green marbles are in the bag?
There are at least 11 green marbles in the bag.
What is the theoretical probability of randomly drawing a green marble if there are 5 red marbles 8 blue marbles and 12 green marbles in a bag.?
The theoretical probability of randomly drawing a green marble can be calculated by dividing the number of green marbles by the total number of marbles in the bag. In this case, there are 12 green marbles out of a total of 5 red marbles + 8 blue marbles + 12 green marbles, which is 25 marbles in total. Therefore, the theoretical probability of drawing a green marble is 12/25 or 48%.
In a bag there are 8 red marbles 4 blue marbles and 6 green marbles write the ratio of red marbles to green marbles?
8:6
Jerry has a total of 23 marbles The marbles are either blue or green He has three more blue marbles than green marbles How many green marbles?
Let X = the number of green marbles. X+3 = the number of blue marbles. X + (X+3) = 23 2X + 3 = 23 2X = 20 X = 10 or the number of green marbles.
If a bag contains 50 marbles and 10 of them are green then what percent of the marbles are green?
20% are green
Jerry has a total of 23 marbles the marbles are either blue or green he has three more blue marbles than green marbles how many green marbles does he have?
a+b=23 b=a+3 a+b a+(a+3)=23 a+a=23-3 2a=20 a=10 green marbles=10 blue marbles =23-10 =13
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.
What is the probability of getting a green marble?
To determine the probability of getting a green marble, you need to know the total number of marbles and the number of green marbles specifically. The probability is calculated by dividing the number of green marbles by the total number of marbles. For example, if there are 5 green marbles out of 20 total marbles, the probability would be 5/20, which simplifies to 1/4 or 25%.
