1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Zigmanuir [339]
3 years ago
13

maddy had twice as many stamps as simon. After maddy sold 60 stamps, simon had twice as many stamps as maddy. how many more stam

ps did maddy have than simon in the beginning
Mathematics
1 answer:
Gennadij [26K]3 years ago
3 0

Answer: 40 stamps

Step-by-step explanation:

Let Maddy = M and Simon = S

Given that maddy had twice as many stamps as simon. That is,

M = 2S ....(1)

After maddy sold 60 stamps, simon had twice as many stamps as maddy. That is,

S = 2( M - 60) .... (2)

Substitutes M for 2S from equation (1) into equation (2)

S = 2( 2S - 60 )

Open the bracket

S = 4S - 120

Collect the like terms

S - 4S = -120

- 3S = - 120

S = 120/3

S = 40

Substitute S into the equation (1)

M = 2 × 40 = 80

Maddy has 80 - 40 = 40 stamp

Therefore, Maddy has 40 more stamps than simon in the beginning.

You might be interested in
Marc ordered a rug he gave a deposit of 30% of the cost and will pay the rest when the rug is delivered if the deposit was $75 h
o-na [289]
Use proportion, so multiply 100 by 75, then divide it by 30 and that's your answer.....250

6 0
3 years ago
Read 2 more answers
The cost of 5 kg of potatoes is £3.20
Tom [10]

Answer:

12kg=7.68

1.5=87

Step-by-step explanation:

I found the cost per kg

4 0
3 years ago
Polygon BCDE (is congruent to) RSTU find the value of y.<br><br>​
german
Y=14
If they are congruent then t=d so write the equation and solve from there, welcome im Procrastinating.
3 0
3 years ago
Ellen is excited to learn how to ski. She went to White Peaks Mountain, rented a pair of skis for $45, and took 4 hours of group
Vikentia [17]

Answer:

x=30h

Step-by-step explanation:

First, you need to figure out how much she actually paid for lessons, so you need to subtract 45 from 165.

165-45=120

Now you know she paid 120 dollars in total for lessons.

You know she took four hours of lessons, so you divide 120 by 4.

120/4=30

It takes $30 an hour for lessons.

Now you can form an equation.

Since you know it takes $30 per hour of lessons, it will be 30h.

x is the full amount of money paid

You don't need to add 165-45 to your equation because not everyone will need to rent skis when they come to White Peaks.

Hope this helps!

6 0
3 years ago
Solve 1.3 (-6) (-4.25)
Scorpion4ik [409]
Step 1. <span>Simplify

33.15

Done! :) Your answer is 33.15
</span>
8 0
3 years ago
Other questions:
  • A letter used to represent a number is called a _____.
    8·1 answer
  • What number can go in 52 &amp; 13
    11·1 answer
  • Solution to the system of inequalities shown below:
    14·1 answer
  • Solve appropriate word problems by modeling them with linear equations in two variables.
    7·1 answer
  • 3,350 to the nearest ten.
    15·2 answers
  • Owen made 60% of the shots he attempted during his hockey practice. He made 18 shots. How many shots did Owen attempt during his
    14·1 answer
  • Students collected donated books for three libraries. The chart shows the number of books given to each of the three libraries
    5·1 answer
  • Find the area of the triangle...
    9·1 answer
  • A bag contains 5 blue marbles, 2 black marbles, and 3 red marbles. A marble is randomly drawn from the bag. The probability of n
    6·1 answer
  • A bulletin board is 96 inches long and 412 feet wide. What is the perimeter, in inches, of the bulletin board?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!