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]
2 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]2 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
Use mulipation to find 2 equivalent fractions
laila [671]
1/2 is equivalent to 2/4 because,

2(1/2) = 2/4 

So as you can see if you multiply the numerator(top) and the denominator(bottom) by the same number, you get an equivalent fraction! In my example you can see that I multiplied both by 2.
5 0
3 years ago
Determine whether the given vectors are orthogonal, parallel, or neither. (a) a = 9, 6 , b = −4, 6 orthogonal parallel neither (
labwork [276]

Answer:

(a) Orthogonal, (b) Neither, (c) Parallel, d( Orthogonal

Step-by-step explanation:

a and b are parallel is a=kb

a and b if a dot b = 0

(a) a dot b = (9)(-4)+6(6)=-36+36=0

  a and b are orthogonal

(b) a dot b = 40-7-21=12

    a=kb -> there is no k value satisfying the equation

    a and b are neither parallel or orthogonal

(c) a dot b = -12-108-48=-168

    a=kb  -> k=-3/4 satisfies the equation

    a and b are parallel

(d) a dot b= 9-3-6=0

  a and b are orthogonal

5 0
3 years ago
The measure of angle BFE is 120°. Find M angle EFD.
Varvara68 [4.7K]
120 + 120 + X + X = 360
240 + 2X = 360
2X = 120
X = 60
6 0
3 years ago
Jillian has made an error. In which step does it occur?<br> Step 1<br> Step 2<br> Step 3<br> Step 4
Ket [755]

Answer:

What error?

Step-by-step explanation

Can u plz label the steps?

4 0
2 years ago
1. Jack is 30 years old and Alice is 35 years old. What percent of Alice's age is Jack, rounded to the nearest tenth of a percen
Firlakuza [10]
The answer would be 57percent
4 0
2 years ago
Other questions:
  • A pair of shoes costs $52.99 and the state sales tax is 8%. Use the formula C = p + rp to find the total cost of the shoes, wher
    7·2 answers
  • for each of the following find, if possible, a whole number that makes the equation true. a. 3+ z=12 b. 36 = 18 + 3 •Z
    14·1 answer
  • The sequence of transformations R0,90 r x-axis is applied to XYZ to produce X’’ Y’’ Z’’. If the coordinates of Y’’ are (3,0),wha
    11·1 answer
  • The graph shows the cost of gasoline at a gas station. Find the cost in dollars per gallon
    11·1 answer
  • Three out of every ten dentists recommend a certain brand of fluoride toothpaste. Which assignment of random digits would be use
    11·1 answer
  • Can someone help me
    8·1 answer
  • The measures of two exterior angles of a decagon are 97° and 89°. What is the sum of the remaining exterior angles?
    9·1 answer
  • 200% of 50 is 20% of which number?
    6·2 answers
  • Evaluate: <br>(i) (3/5)^-2<br>(ii) (-3)^-3<br>(iii) (2/7)^-4<br><br>Need help please.​
    9·2 answers
  • If s=4πr², find the positive value of r when S=616.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!