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solmaris [256]
3 years ago
6

Commemorative coins come in packs of 15,while coin holders come in packs of 25. What are the least numbers of packs you should b

uy in order to have the same numbers 9f coins and coins holders
Mathematics
2 answers:
kozerog [31]3 years ago
7 0
The least common multiple of 25 and 15 is 75. You'd do _ x 25 = 75 and _ x 15 = 75. The answer would be 3 and 5, so 5 packs of coins and 3 packs of coin holders.
Pani-rosa [81]3 years ago
4 0

Answer:

5 packs of commemorative coins and 3 packs of coin holders.

Step-by-step explanation:

We have been given that commemorative coins come in packs of 15,while coin holders come in packs of 25.

To find the least number of packs, we need to find LCM of 15 and 25.

Multiples of 15: 15, 30, 45, 60 ,75, 90,..

Multiples of 25: 25, 50, 75, 100,...

We can see that least common multiple of 15 and 25 is 75.

\text{Packs of commemorative coins}=\frac{75}{15}=5

\text{Packs of coin holders}=\frac{75}{25}=3

Therefore, you should buy 5 packs of commemorative coins and 3 packs of coin holders.

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Writing proportions
maxonik [38]

Answer:

I think you would do $9.70 times 2. Afterward, you would divide 9.70 by 5 which gives you 1.94. Finally, you add them together, leaving you with. 11.64. I hope I helped with this.

:D

7 0
3 years ago
Read 2 more answers
You have $4.10 in nickels, dimes, and quarters. If you have twice as many dimes as quarters, and five more nickels than dimes, h
lutik1710 [3]

For this case, the first thing to do is define variables.

We have then:

  • <em>x: number of nickels </em>
  • <em>y: number of dimes </em>
  • <em>z: number of quarters </em>

We write now the system of equations:

0.05x + 0.1y + 0.25z = 4.10\\y = 2z\\x = y + 5

Then rewriting the equations we have:

0.05 (2z + 5) + 0.1 (2z) + 0.25z = 4.1\\0.05 (2z + 5) + 0.1 (2z) + 0.25z = 4.1\\0.1z + 0.25 + 0.2z + 0.25z = 4.1\\0.55z = 4.1-0.25

z = \frac {3.85} {0.55}\\z = 7

Then, substituting values we have:

y = 2 (7)\\y = 14

Finally:

x = 14 + 5\\x = 19

Answer:

19 nickels

14 dimes

7 quarters

6 0
4 years ago
How to solve variables on both sides of equation
MatroZZZ [7]

Answer:

isolate variable by adding or subtracting it on both sides.

Step-by-step explanation:

7 0
3 years ago
Write a mathematical sentence that expresses the information given below . Use t as your variable name.Necessary type &lt;= to m
miskamm [114]

Answer:

t + 8° > 82°

Step-by-step explanation:

Given that :

Let t = temperature when Susanne checks at 11:00

If t rises by 8 more degrees, it will break the record high temperature for that day

Record high temperature for the day = 82 degree

Hence,

Temperature at 11:00 + 8° > record high temperature for the day

t + 8° > 82°

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Use a diagram to solve: Sara ran two-fifths of the race. She needs to run 120 m more to finish the race. What is the length of t
KATRIN_1 [288]
The answer would be 200 meters.
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3 years ago
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