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]
4 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]4 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
Solve for x.<br> logo(x-2) + log(x + 3) = 2
amid [387]

Answer:

x=-1-5√17/2

Step-by-step explanation:

logo((x-2)(x+2))=2

logo(x²+3x-2x-6)=2

x²+3x-2x-6=10²

x²+x-6=100

x²+x-106=0

x=-1+5√17/2

5 0
2 years ago
Mary made 1/5 of a batch of cookies in 1/10th of an hour, how many batches of cookies can she make in one hour? This is unit rat
barxatty [35]

Answer:

1/5 ÷ 1/10 = 10/5

Step-by-step explanation:

7 0
3 years ago
A principal gathered data about the distance in miles that his teachers and bus drivers live from the school
wel

Answer:

<em>The measure distances for the bus drivers is 5 miles less than that of distances for the teachers</em>

Step-by-step explanation:

<em>The range of the distance for the bus drivers live from school with that of the teachers is estimated to be 5 miles apart</em>

<em>The data that was generated in the school by the principal did an estimation of the distances of both the bus driver and that of the teachers, it was found out that the distances was five miles. </em>

4 0
3 years ago
Which three-dimensional object has the same shape for parallel, perpendicular, and diagonal cross sections?
GuDViN [60]
This answer would be a cuboid because it has parallel,perpendicular,and diagonal cross sections
3 0
3 years ago
Kayden is a stunt driver. One time, during a gig where she escaped from a building about to explode(!), she drove at a constant
solniwko [45]

Answer:

The answer is D(t) = 160 - 25t

Step-by-step explanation:

well khan academy said it lol

7 0
3 years ago
Other questions:
  • Simplify -3p 3 + 5p + (-2p 2) + (-4) - 12p + 5 - (-8p 3). Select the answer in descending powers of p.
    15·1 answer
  • Q10 please people. Any answers :)
    5·1 answer
  • 98 POINTS MATH!
    14·1 answer
  • The radius of a circle is 7m. Find the circumference to the nearest tenth(urgent)
    11·2 answers
  • How do you solve a simple equation?
    10·1 answer
  • A new crew of painters takes two times as long to paint a small apartment as an experienced crew. together, both crews can paint
    10·1 answer
  • Please help, correct answers please<br> PLEASE I DO NOT UNDERSTAND
    11·2 answers
  • Solve for b -2b + 11 - 5b = 5 - 6b
    8·2 answers
  • The record high temperature in January was 18 degrees. The record low temperature was –7 degrees. What is the amount of change b
    13·1 answer
  • Jax spent 1/4 of his money on 5 candy bars. If each candy bar cost the same amount what fraction of his money did he spend on ea
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!