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horrorfan [7]
2 years ago
12

Caleb bought 5 packs of pencils for 10$ . how muc will he pay for 9 packs of pencils?

Mathematics
1 answer:
alexandr402 [8]2 years ago
3 0

Step-by-step explanation:

Find 1 pack of pencil:

1 pack = 10 ÷ 5 = $2

9 packs = 2 x 9 = 18

Answer: $18

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100 is what percent of 250?
alisha [4.7K]

Answer:

100 is 40% of 250

Step-by-step explanation:

1. We assume, that the number 250 is 100% - because it's the output value of the task.  

2. We assume, that x is the value we are looking for.  

3. If 100% equals 250, so we can write it down as 100%=250.  

4. We know, that x% equals 100 of the output value, so we can write it down as x%=100.  

5. Now we have two simple equations:

1) 100%=250

2) x%=100

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

100%/x%=250/100

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 100 is what percent of 250

100%/x%=250/100

(100/x)*x=(250/100)*x       - we multiply both sides of the equation by x

100=2.5*x       - we divide both sides of the equation by (2.5) to get x

100/2.5=x  

40=x  

x=40

now we have:  

100 is 40% of 250

6 0
3 years ago
Read 2 more answers
7y-4y+2=<br> What’s the answer?
Kay [80]

Answer:

3y + 2 =

Step-by-step explanation:

7y - 4y = 3y

3y and 2 are not like terms, so you can't add any further

3 0
3 years ago
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The price of gold is often reported per ounce. At the end of 2005, this price was $513. At the end of 2015, it was $1060. By wha
GuDViN [60]

Answer:106.63%.

Step-by-step explanation:To find the percentage of the price per ounce of gold increase we will use % increase formula.Therefore, the price of per ounce of gold increased by 106.63%.

7 0
2 years ago
Your beginning checkbook balance on Sunday morning is $417.83. On Monday you buy groceries for $189. 12 and purchase a meal on T
Ahat [919]

Answer:

320.82

Step-by-step explanation:

4 0
3 years ago
You estimate that a puppy weighs 12 pounds. The actual weight of the puppy is 14 pounds. Find the percent error. Round your answ
Amiraneli [1.4K]

Answer:

The Estimated weight of the puppy = 12 pounds

Actual weight of the puppy = 14 pounds

Difference in estimated weight and actual weight = 14 - 12

= 2 pounds  

⇒ [(14 - 12)*100]/14

⇒ (2*100)/14

⇒ 200/14

⇒ 14.285 %  

7 0
2 years ago
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