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
Anvisha [2.4K]
3 years ago
12

At the start of the week a bookshop had science and art books in the ratio 2:5. By the end of the week, 20% of each type of book

s were sold and 2240 books of both types were unsold. How many books of each type were there at the start of the week?
Mathematics
1 answer:
Anastaziya [24]3 years ago
5 0
Let there be 2x science and 5x art books 
<span>science books sold = 2x × 0.2 = 0.4x </span>
<span>science books unsold = 2x – 0.4x = 1.6x </span>

<span>art books sold = 5x × 0.2 = x </span>
<span>art books unsold = 5x – x = 4x </span>

<span>total books unsold = 1.6x + 4x = 5.6x </span>
<span>5.6x = 2240 </span>
<span>x = 400 </span>

<span>2x science = 800 </span>
<span>and 5x art books = 2000 </span>
You might be interested in
A realtor makes a commission of $11,400 on a $190,000 house he sells. What is his commission rate?
Reika [66]
So bassically
his commision rate is
x% times 190000=comission
so x% times 190000=11400
divide both sdies by 190000
x%=11400/190000
solve for x percent
11400/190000=114/1900=3/50
x%=3/50
percent means parts out of 100 so x%=x/100
x/100=3/50
3/50=6/100
x/100=6/100
multiply both sdies by 100
x=6

the commision rate is 6%
4 0
3 years ago
Divide these polynomials. (8x³ + 2x² - 7x + 2) ÷ (2x - 1)
Novay_Z [31]

Answer:

The answer is letter A.

(8x³ + 2x² - 7x + 2) ÷ (2x - 1)

8x³ + 2x² - 7x + 2 ÷ 2x - 1

(2x-1)(4x²+3x-2)÷2x-1

cancel 2x-1 so that the answer is 4x²+3x-2.

6 0
2 years ago
John’s bank account increased in value from last year to those year by 8% to $250. If the account increases by the same percenta
inessss [21]

Answer:

$270

Step-by-step explanation:

We are given;

  • The rate of increase is 8%
  • The new amount is $250

We need to determine the value in the next year with the same rate of increase;

Therefore;

250% = 100%

New amount = 100 + 8 = 108%

Therefore;

New amount = (250 × 108)÷ 100

                      = $270

Therefore, the value in the next year is $270

4 0
3 years ago
6. If EF=3x-17, FG=2x-8, and EG=15, find the value of x, EF, and FG. the drawing is not to scale
jasenka [17]
Don't trust those links, my guy it's a scam or virus
7 0
3 years ago
The slope of (3,6) and (5,2)
Elden [556K]

\text{Hey there!}

\mathsf{The\ slope\ formula\ is: \dfrac{y_2-y_1}{x_2-x_1}}

\mathsf{y_2=2}\\\mathsf{y_1=6}

\mathsf{x_2=5}\\\mathsf{x_1=3}

\mathsf{Equation: \dfrac{2-6}{5-3}}\\\\\bullet\mathsf{2-6=-4\leftarrow your\ \bf{y}\mathsf{\ value}}\\\\\bullet{\mathsf{5-3=2\leftarrow your\  \bf{x}\ \mathsf{value}}}\\\\\mathsf{New\ equation/answer:\ \dfrac{-4}{2}}\\\\\boxed{\bf{Answer:\mathsf{-2\ or\ \dfrac{-4}{2}}}}

\text{Good luck on your assignment enjoy your day!}

~\frak{LoveYourselfFirst:)}

3 0
3 years ago
Other questions:
  • What is the product of (-0.9)(-2.4)?
    5·2 answers
  • What is the form of 2,000,947
    12·1 answer
  • Ive been stuck on this question for 4 hours someone please help me
    7·1 answer
  • PLEASE HELP 30 POINTS ! !
    13·2 answers
  • A box contains 16 cherry fruit chews, 15 peach fruit chews, and 12 Plumford choose. Which two flavors are in the ratio 5 to 4?
    8·1 answer
  • 10 cards are numbered from 1 to 10 and placed in a box. One card is selected at random and is not replaced. Another card is then
    9·1 answer
  • HELP me please I'm stuck!!?.​
    14·2 answers
  • If the length of FG is 6 units, what is the length of EH?
    5·1 answer
  • Tessssttttt!!!! ASAP Anwser. 50 COoinnss PLZ Help Can some plz help me with this! I have two attempts on this test. I used one a
    6·2 answers
  • Which are correct representations of inequality 6x&gt;3+4(2x-1)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!