The ratio of red marbles to blue marbles in a jar is 2 to 5. If there are 35 marbles in the jar, how many red marbles are there?
Do have the right answer: 2:35
The ratio of red marbles to blue marbles in a jar is 2 to 5. If there are 35 blue marbles in the jar, how many red marbles are there?
5 x7 =35
2x7=14 red marbles
is this right
no. Start with
ratio of red marbles to blue marbles in a jar is 2 to 5
That is, there are 2x reds and 5x blues.
Now you know that there are 35 in total, so what's next?
2/5:35=14
is this right
The ratio of red marbles to blue marbles in a jar is 2 to 5. If there are 35 blue marbles in the jar, how many red marbles are there?
5 x7 =35
2x7=14 red marbles
is this right
no, no, no ...
collect a group of 7 marbles: 2 red, 5 blue
How many such groups can you make with 35 marbles?
5, Since 5*7 = 35
So, 5 groups, each with 2 reds and 5 blues.
so, 10 reds and 25 blues
10:25 = 2:5
Why did you not just solve for x as I showd you, and then
red = 2x = 2*5 = 10
blue = 5x = 5*5 = 25
To find the number of red marbles in the jar, we can set up a proportion using the ratio given.
The ratio of red marbles to blue marbles is 2 to 5. This means that for every 2 red marbles, there are 5 blue marbles.
Let's assume that the number of red marbles is 2x (where x is a positive integer). Then the number of blue marbles would be 5x.
According to the problem statement, there are a total of 35 marbles in the jar. So we have the equation:
2x + 5x = 35
Combining like terms, we get:
7x = 35
Solving for x, we divide both sides of the equation by 7:
x = 5
Now we can find the number of red marbles by substituting x back into the equation:
2 * 5 = 10
Therefore, there are 10 red marbles in the jar.
no. for every 2 reds, there are 5 blues.
So, reds are only 2/7 of the total.
2/7 * 35 = 10
What you should have done was solve for x:
2x+5x = 35
7x = 35
x = 5
Now, reds = 2x = 10
blues = 5x = 25