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
Mazyrski [523]
3 years ago
15

andrew has seven fewer coins than casey. bob has three more than twice as many coins as andrew. altogether, they have 502 coins.

how many coins does bob have?
Mathematics
1 answer:
7nadin3 [17]3 years ago
6 0
Let C is the number of coins Casey has
<span>Andrew has seven fewer coins than casey = C - 7
</span><span>Bob has three more than twice as many coins as Andrew = 2(C-7) + 3
</span>altogether, they have 502 coins = C + (C - 7) + 2(C-7) + 3 = 502

Now solve for C:
C + (C - 7) + 2(C-7) + 3 = 502
C + C - 7 + 2C  - 14 + 3 = 502
4C - 18 = 502
4C = 502 + 18
4C = 520
C =520/4
C = 130

So Casey has 130 coins
Andrew: C - 7 = 130 - 7 = 123
Bob: 2(C-7) + 3 = 2(130 - 7) + 3 = 2(123) + 3 = 246 + 3 = 249

Proof: 130 + 123 + 249 = 502

Answer: Bob has 249 coins

You might be interested in
Need some help please
spayn [35]
It would be A.) 7. hope this helps
3 0
3 years ago
Read 2 more answers
alex wants to buy the same number of stamps and envelopes dancer sold in packs of 14 and envelopes are sold and packs of 10 what
lianna [129]
5 packs of stamps and 7 packs of envelopes. There will be a total of 70 envelopes and stamps.
6 0
3 years ago
Which shows a way to take apart 7?
sashaice [31]
Add 7 and 7 which is 14 and then take it apart because it is an even number
3 0
3 years ago
Read 2 more answers
-3*e^(5w)=-88 Solve the equation for w. Express the solution as a logarithm in base-e.
Lilit [14]

bro what is this i have never seen this

6 0
3 years ago
Jefferson purchased a jacket originally
jek_recluse [69]
The percent of discount is 70%.
4 0
3 years ago
Other questions:
  • Multiply the polynomial (12x^4 - 4x^3 + 5) by (-4x^2) *
    5·1 answer
  • 40 POINTS FOR THIS (HELP)(Bad at algebra) - In two or more complete sentences, compare the number of x-intercepts in the graph o
    11·1 answer
  • Please help: solve for x
    11·1 answer
  • Solve the equation.<br> -0.3x = - 1.5
    13·2 answers
  • 24.92/1000 and show the work
    13·1 answer
  • It's your birthday there are 27 kids in your class if each kid eats a maximum of nine cookies how many cookies do you need to br
    8·1 answer
  • Tom and Max are diving. Tom is 26 feet below sea level and Max is 8.25 feet above Tom. What is Max's elevation?
    9·1 answer
  • What is the area of the trapezoid?
    11·1 answer
  • Find the volume of the cone.
    14·1 answer
  • The zeros of a parabola are 6 and -5. If (-1,3) is a point on the graph, which equation can be solved to find the value of
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!