In both cases, we can use a rule of three.
<h2>First part</h2>
Therefore, 4 students correspond to 20% of 20 students in total.
<h2>Second part</h2>
Therefore, 2 doctors correspond to 8% of 25 doctors in total.
Answer:
<em>Number of nickels = 6</em>
<em>Number of dimes = 14</em>
<em>Number of quarters = 23</em>
<em></em>
Step-by-step explanation:
Total number of coins = 43
Let number of nickels = n
Let number of dimes = d
Let number of quarters = q
Money in n nickels =
Money in d dimes =
Money in q quarters =
Total money = $7.45
The sum of the numbers of nickels and dimes is 3 less than the number of quarters.
i.e.
Let us put the value in (1):
Putting the value of q in (1) and (2):
n+d = 20 .... (3)
(4) - (3):
d = 14
Now, from (3):
n = 6
<em>Number of nickels = 6</em>
<em>Number of dimes = 14</em>
<em>Number of quarters = 23</em>
Answer:
Step-by-step explanation:
<u>GIVEN:
</u>
To find the missing number in the proportion, you have to isolate it the term of x from one side of the equation.
First, thing you do is switch sides.
Multiply by 21 from both sides.
Solve.
Multiply the numbers from left to right.
Use the order of operations.
PEMDAS stands for:
- Parentheses
- Exponents
- Multiply
- Divide
- Add
- Subtract
- <u>Therefore, the final answer is x=24.</u>
I hope this helps. Let me know if you have any questions.