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> -5/4x = -30<br> Simplify your answer as much as possible.
zlopas [31]

Answer:

The answer is x=24.

Step-by-step explanation:

This is a one step equation, so it is simple, as shown.

In order to isolate the variable, you need to multiply each side of the equation by the fraction's reciprocal. In this case, it is -4/5.

Thus, x= -30 x -4/5

All things said, the answer is x=24.

I hope this helped!!

~ Penny

8 0
4 years ago
Read 2 more answers
Will give brainliest answer
alukav5142 [94]

Answer:

360 drgree is the interior angle

7 0
3 years ago
Read 2 more answers
Two cyclists start at the same point and travel in opposite directions. One cyclist travels 4 mile per hour slower than the othe
jeyben [28]

Answer:

12 mph and 16 mph

Step-by-step explanation:

distance = speed * time

56 = s * 2 + (s - 4) * 2

56 = 2s + 2s - 8

56 = 4s - 8

64 = 4s

16 = s

s = 16

s - 4 = 12

5 0
3 years ago
Read 2 more answers
5.4*7/4 I need help plz help me thanks
Lady bird [3.3K]
Decimal: 9.75
Fraction: 189/20
Mixed Number: 9 9/20
7 0
3 years ago
Feb 24, 4:26:37 AM
EastWind [94]
81 by 14*14-67*8 would get 81
7 0
3 years ago
Other questions:
  • Which is the inverse of the function f(x)=4x^2 ?
    7·1 answer
  • A packing crate can hold 205 avocados.there were 7000 avocadospicked at a large grove. The owner has 36 packing crates. Does he
    11·2 answers
  • An equilateral triangle has a side length of 7 1/2 centimeters. The triangle is dilated by a scale factor of 2/3 to create a new
    8·1 answer
  • Tamara likes to mix and match her 4 scarves, 3 pairs of gloves, and 2 hats. The color choices are listed in the table. On Monday
    12·1 answer
  • A baker bakes a batch of muffins and splits the batch evenly into six different trays. She then adds five croissants to each tra
    14·1 answer
  • I don’t know any of these!!
    14·1 answer
  • Joel lives 5/8 of a mile from the library. Nina lives 1/2 of a mile from the library. Theo lives 4/10 of a mile from the libary.
    13·2 answers
  • Simplify the following expression:<br> 6 + 3 - 2
    11·2 answers
  • Help me please hurry
    12·1 answer
  • If two lines having equations 3x+5y-16=0 and 4y-mx= 20 are parallel, find the value of m
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!