You have 59 total coins for a total of 12.05. You only have quarters and dimes. How many of each coin do you have?

Answers

Answer 1

Answer: Ok, let's settle this with a simultaneous equation...

0.25 * X + 0.10 * Y = 12.05

X + Y = 59

------

This means that:

X = 59 - Y

Which means that:

0.25 * (59 - Y) + 0.10 * Y = 12.05

0.25 * 59 - 0.25 * Y + 0.10 * Y = 12.05

Y (0.10 - 0.25) = 12.05 - 0.25 * 59

-0.15 * Y = -2.7

Y = (-2.7)/(-0.15)

Y = 18

---------

X + Y = 59

Therefore:

X + 18 = 59

X = 59 - 18

X = 41

-------------

There are 41 quarters and 18 dimes.

Related Questions

John is buying food at the grocery store. He has made a list of 90 items that he needs to buy. He has bought 1/6 of the items. How many items has he bought?
Jeremy has 2- foot- long boards He needs to cut pieces that are 15 inches long from he boards What ls the greatest number of 15 inch pieces he can cut from the two boards
Deena uses 3/8 cup milk and 2/8 cup oil in a recipe. How much liquid does she use in all?
The table shows a golfer's scores for four rounds of a recent US Women's Open. Her total score was even par. What was her 3rd round score?
Which unit would be best to measure the mass of s mouse

How to find the measurement of a parallelogram

Answers

Answer:

In a parallelogram, consecutive angles are supplementary. Thus,

B + C = 180^{\circ}

(2x+15)+x=180

3x+15=180

3x=165

x=55

Step-by-step explanation:

0.99 divided by 0.0033

Answers

Answer:

300

Step-by-step explanation:

Add 3 to my number and then multiply the result by 5 the answer is 35

Answers

number=x since unknon
add 3 to x
3+x, thenmultiply by 5
(3+x) timmes 5 answer is 35
5(3+x)=35
now distribute useing distributive property
a(b+c)=ab+ac
5(3+x)=15+5x
15+5x=35
subtract 15 from both sides
5x=20
divide both sides by 5
x=4

the nuber is 4

7x5=35? I'm sorry if this is incorrect. I tired i'm not exactly sure.

Sam worked on his science fair project for 1/4 hour on Friday and 1/2 hour on Saturday. What are four common denominators for the fractions? Explain your reasoning.

Answers

2, 4, 8, 12 are all common denominators because they can become the same denominator

725 miles in 8 hours ___ miles per hour

Answers

Just divide 725 miles by 8 hours and you should get 90.6 miles per hour.

The answer. is 90.625This is because you do 725 ÷8 is 90.625~JZ

What is another name for the set of counting numbers

Answers

Its is called A positive integer or a natural number.

Other Questions

Train A arrives at central station on the hour and every 12 minutes. Train B arrives on the hour and every 15 minutes. When do both trains arrive at the same time? A) On the hour and 30 minutes past the hour B) On the hour and 15 minutes to the hour C) On the hour and 27 minutes past the hour D) On the hour Please explain why you chose the answer and how you achieved it.

What is the nearest thousands of 4983

How do I solve this proportion?

Compare.Use <,>,or =. 1,000 ft _____ 300 yd