2 years ago

what number must be added to 3 and 8 so that the ratio of the first number to the second number is equal to 3 :4

1 answer:

3 0

The answer is 12.
Steps
If that number is x
(3+x)/(8+x)=3/4
"Cross multply"
4(3+x)=3(8+x)
12+4x=24+3x
x=12
To check: add 12 to 3 and 8. 3+12=15 and 8+12=20. 15/20=3/4

You might be interested in

The two-way table below displays demographic data for the passengers aboard the Titanic.

meriva

Answer:

About 72%

Step-by-step explanation:

All you have to do is divide the number of children who traveled in third class (79) by the total number of children (109)

79/109=.724770642 OR 72%

5 0

2 years ago

Read 2 more answers

Explain how knowing that 5 divided by 8 is 0.625 helps you write the decimal for 4 5/8

arsen [322]

Because it become 4(0.625) then it is 2.5

8 0

2 years ago

If someone who worked 16 hours received $132 in pay, what is his or her hourly rate?

My name is Ann [436]

<span>$132 / 16 = $8.25

answer
</span> rate = $8.25 per hour

5 0

2 years ago

Read 2 more answers

Find the equation that has a slope of - 1/8 and passes through the point (0.-4)

nikdorinn [45]

Answer:

ez, answer choice number 4

Step-by-step explanation:

y=-1/8x(this is the slope) -4(this is the y intercept

4 0

2 years ago

BEST ANSWER GETS BRAINLIEST, PLZ ANSWER!!!!

Inga [223]

Answer:

they both = 100

Step-by-step explanation:

3 0

2 years ago

what number must be added to 3 and 8 so that the ratio of the first number to the second number is equal to 3 :4​

what number must be added to 3 and 8 so that the ratio of the first number to the second number is equal to 3 :4