If the ratio of red marbles to blue marbles in a jar is 3 to 8, the meaning is for every 3 red marbles there are 8 blue marbles.
3 red marbles------------------8 blue marbles.
ratio=3/8
we have 40 blue marbles; we have to compute the number of red marbles.
1) Method 1; by the rule three.
3 red marbles-----------------8 blue marbles
x----------------------------------40 blue marbles
x=(3 red marbles * 40 blue marbles) / 8 blue marbles=15 red marbles.
answer: B. 15
Method 2: the ratio of red marbles to blue marbles is
ratio=number of red marbles / number of blue marbles
ratio=3/8
if we want to compute the number of red marbles we have to multiply the number of blue marbles by this ratio.
number of red marbles=ratio (red/blue)* number of blue marbles
number of red marbles=(3/8)*40=15
Answer: B.15
Answer:
well, there are no multiple choice options, but the answer is whichever number has a 5 in the ten thousands place like 56,789
Step-by-step explanation:
Answer:
3 liters = 3,000 ml. it is not equal to 3,500 ml.
Step-by-step explanation:
Hello!
By using a certain formula, a repeating number with two repeating digits will always become the number out of 99. In our case, we would get 
.
To get the numerator to equal three, we divide both sides by 9.
Therefore, x=11.
I hope this helps!
