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
Juliette [100K]
3 years ago
7

George buys some first class and second class stamps to put on some letters. Each first class stamp costs 67p, and each second c

lass stamp costs 58p. The ratio of first to second class stamps is 1:4. George bought 320 stamps. How much did George pay for all the stamps?
Mathematics
1 answer:
Dafna1 [17]3 years ago
3 0

Answer:

£191.36

Step-by-step explanation:

Sum the parts of the ratio, 1 + 4 = 5 parts

Divide 320 by 5 to find the value of one part of the ratio.

320 ÷ 5 = 64 ← value of 1 part of the ratio , thus

4 parts = 4 × 64 = 256

Thus he bought 64 first class and 256 second class.

Cost = (64 × £0.67) + (256 × £0.58)

        = £42.88 + 148.48

        = £191.36

You might be interested in
An architect has his floor plan for a house he is building. The foundation for the house has already been laid and measures 300
wlad13 [49]

Answer:

12

Step-by-step explanation:

You divide 300 by 25

300/25=12

His house is 12 in long on the floor plan

7 0
3 years ago
15 pts! Will Give Brainliest Halp! PLZ
aivan3 [116]

Theres a saying: Dividing fractions dont ask why, just flip the second and multiply.

so a/b / c/d = a/b * d/c

-8/2 * -3/6

1. cross - cancel common factor 2

4/2 * -3/3

2. Multiply

-4(-3)/ 2*3

3. multiply numbers

--12/2*3

- -12/6

4. Apply fraction rule -a/b=- a/b

=-(-12/6)

5. divide

= -(-2)

6. Apply rule -(-a)=a

=2

Your answer would be 2


3 0
3 years ago
Read 2 more answers
A) 2-x,when x=5
MrRissso [65]

Answer:

a) 2-5 = -3

b) 3(4) + 2(4) = 20

c) (3(5)+2)(5-4) = 17

Step-by-step explanation:

Substitute the variables for their values and then solve from there. Hopefully this helps, I don't know if I answered your question fully.

7 0
2 years ago
Read 2 more answers
the vertex of this parabola is (2,-1). When the x-value is 5 the y-value is 0.what is the coefficient of the squared expression
weeeeeb [17]
1/9
Here's the proper explanation:
Since the vertex is (2,-1), the original equation will look like this: y=a*(x-2)^2-1
When the substitution happens we get to this:
0=a*(5-2)^2-1 then 1=a*(5-2)^2 -> 1=a*9
So, a=1/9! Written in another form:
1/9x^2-4/9x+4/9-1

Hope could help :)
8 0
3 years ago
A theater has 33 seats in the first row, 37 seats in the second row. 41 seats in the third row, and so on. How many seats are th
Jlenok [28]

Answer:

90 seats are in row 19

Step-by-step explanation:

The pattern is adding 4 seats so 3 x 19 is 57 so 33 + 57 is 90 seats

Hope this helps

5 0
2 years ago
Other questions:
  • At 8:00, the temperature was 6 degrees Celsius (°C). Three hours later, the temperature was -13°C. By how many degrees Celsius d
    8·1 answer
  • If you love math you will like this q what is 100×12
    7·1 answer
  • Will wanted to make some brownies using the pan shown below.
    12·1 answer
  • 2(3 times 3+4 times 4)
    13·2 answers
  • 4(h+11)-15<br> The solution
    15·1 answer
  • Find x in the parallelogram OA =(X+23) IN ; OC=31 in
    11·1 answer
  • Stan works at King's Golf Spot. He works 11 hours a week and earns $8.25
    7·2 answers
  • Elena is buying cups and plates for her party. Cups are sold in packs of 8 and plates are sold in packs of 6. She wants to have
    6·2 answers
  • Which of the following pairs show(s) two congruent triangles?
    10·2 answers
  • Question 3 (5 points)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!