The ratio of blue marbles to white marbles in a bag is 4 to 5 at this rate how many blue marbles are

10 answers
Question:

The ratio of blue marbles to white marbles in a bag is 4 to 5 at this rate how many blue marbles are there if there are 15 white marbles

Answers

12 blue marbles for 15 white marbles because you multiply 5*3 so multiply 4*3 to get answer

4 blue marbles. 5 white marbles. 5/15=3. 3x4=12. i think it’s 12 marbles.

4/5 = B/W = B/15 
B = 4*15/5 = 12

4:5 = x : 15
let x be blue marbles
4(15) = 5x
x = 12
therefore 12 blue marbles

12 blue marbles

The ratio of blue to white is 4:5. We know that if we multiple 5 by 3 we get 15 which is the amount of white marbles we have in the equation. So we also take 4 times 3 to get 12 Which is how many blue marbles are in the bag when there are 15 white marbles.

There are 12 blue marbles.

Step-by-step explanation:

4/5 = x/15

Multiply both sides by 15.

60/5 = x

Simplify.

x = 12

There are 12 blue marbles

Step-by-step explanation:

Again you would use ratios 4:5 and then it becomes x:15 you multiply 5 by 3 to get 15 so you multiply 4 by 4 to get 12

There are 12 marbles

Step-by-step explanation:

blue : white

4 : 5

White = 15

x : 15

So,

4/5 = x/15

Cross multiply,

4 × 15 = 5 · x

60 = 5x

60 / 5 = x

12 = x

4 : 5 = 12 : 15

Sum up 4 and 5; result of that is 9.  Then 4/9 of the marbles in the bag are blue and 5/9 are white.

One of the easier ways in which you could solve this problem would be to write and solve an equation of ratios:

blue        4          x
= =
white       5        15

5x = 60, and thus x = 12.  There are 12 blue marbles.

Note that 12/15= 4/5 or 4:5.

 the answer is 12 blue marbles

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