MATHEMATICS MIDDLE SCHOOL

At a school fair 70% of the people are under 16 years old. One-third of the people remaning are teachers. If there are 21 teachers at the fair, how many people are there at the fair total

Answers

Answer 1

Answer:

Let's write out what we do know...

70% of the people are under 16 years old

From this information, we can infer that 30% of the people are 16 or older.

100%-70%=30%

1/3 of the people 16 or older are teachers. There are 21 teachers.

1/3 of 30% is 10%

1/3*.30=.10 or 10%

So 21 is 10% the total number of people at the fair.

$(10)/(100)= (21)/(x) 2100=10x 210=x$

(I cross multiplied and then divided both sides by 10 to get x=210)

There are 210 people at the fair.

Answer 2

Answer: 30% remains
a third of 30% is 10%
so 10% are teachers
21 (amount of teachers) × 10 = 210
answer = 210

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The owner of a music store received a shipment of 1532 CDs. The CDs came in 37 boxes. The same number of CDs were in 36 boxes. How many CDs were in the remaining box?

Answers

The remaining box has 20 CD's.

What is Division ?

In mathematics, division is the process of dividing a number into equal parts and determining how many equal parts can be made.

It is given in the question that

The owner of a music store received a shipment of 1532 CDs.

The CDs came in 37 boxes.

The same number of CDs were in 36 boxes.

CDs were in the remaining box = ?

If we divide 1532 by 36 , we get a quotient of 42 and remainder of 20CD's

Which means if 42 CD's are placed equally in 36 boxes and then only 20 CD's will be left and that will be placed in the remaining box.

Therefore , the remaining box has 20 CD's.

To know more about Division

brainly.com/question/21416852

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First you figure out how many were in each box (1532/37 =41.405....)
So you round that to 41 cds per box.

Now that you have figured out how many cds were in each box, you have to figure out the reamaining, and since we got a long number when dividing that means that it didnt go into the number without have extra.
So we multiply (41 • 37 = 1,517) now that we have figured out that total we subract that amount from the total amount of cds

(1,532 - 1,517 = 15)

So there was a total of 15 cds remaining.
Hope this helps!!!

Four times what equals thirty?

Answers

Hi there!

Great question! :D

To figure out our unknown value, we can replace our unknown value, or blank space, with x.

So our equation would look something like $4x = 30$

We have a variable next to a number to show we are multiplying. But since we're figuring out an unknown, we'll do the opposite, which is division.

$4x = 30$

We'll divide both sides by our 4.

$(4x)/(4) = (30)/(4)$

We can eliminate the variable right away on our left side of our equation. This makes it look like there's not a lot of steps through solving.

$(30)/(4) = 7.5$

Final answer:

$x = 7.5$

When in doubt of your answer, we can multiply 4 by 7.5 and see what we get. We should get 30.

$4 * 7.5 = 30 :)$

We were right!

Hope this helps! :D

4x=30
4x/4=30/4
x=7.5

Hope this helps!!

In a police chase on the interstate, the suspect’s car reached a speed of 88 miles per hour for a total 15 minutes. In that time, how many miles did the chase last?

Answers

Answer:

22 miles

Step-by-step explanation:

15 is 1/4 of 60. 1/4 of 88 is 22.

A fishing boat was out to sea for 6 months and traveled a total of 8578 milesin the first month the boat traveled 659 miles how many miles did the fishing boat travel during the remaining 5 momths

Answers

7919 miles in the next 5 months

How is the product of 4 and 2 shown using integer tiles?A. ++++ ++
B. ---- --
C. ++ ++ ++ ++
D. -- -- -- --

Answers

Answer:

C. ++ ++ ++ ++

Step-by-step explanation:

Note that the numbers are positive 4 & positive 2 (which explains the + signs).

The answer can be two ways. 4 groups of 2, or 2 groups of 4.

C. ++ ++ ++ ++ is your answer, for it is 4 groups of 2. Note that A is not the answer, for that would be for adding, in which you have one group of 4 and one group of 2.

Answer:

Step-by-step explanation:

im smart

Sarah colored 1/2 of her paper green. Melanie folded her paper into eight. How many sections should Melanie color to make her paper look just like sara's?