Answer:
a) price of an exercise book = #200
b) #400
Explanation:
Let x represent the price of the book
Let y represent the price of the exercise book
- According to this question, the price of the book is thrice that of an exercise book i.e. x = 3y
- Also, the question states that if a student spend #9600 on book and #8000 on exercise book, he has 56 items altogether. This means that to get how many books and exercise books he bought, we divide the price of book and exercise book he bought by the price of each book (x) and exercise book (y) respectively. Mathematically, this means:
- Student bought 9600/x books
- Student bought 8000/y exercise books
So, 9600/x books + 8000/y exercise books = 56 item
9600/x + 8000/y = 56
Since x = 3y
We can say;
9600/3y + 8000/y = 56
Find the L.C.M of 3y and y = 3y and solve using fraction method (see attachment).
9600 + 24000/3y = 56
33600/3y = 56
Cross multiply
33600 = 56 × 3y
33600 = 168y
Divide both sides by 168
33600/168 = 168y/168
200 = y
y = 200
Since, x = 3y
x = 3 × 200
x = 600
Therefore, the price of book (x) and exercise book (y) are #600 and #200 respectively.
b) The difference between the price of a book and an exercise book i.e. x - y
= #600 - #200
= #400
Answer: The binomial naming device is the device used to call species. Each species is given a call that includes parts. The first component is the Genus to which the species belongs, and the second component is the species call.
Answer:
variations
Explanation:
if there are variations of something, then there will be different occurrences in the same species. Hope that this helps you and have a great day :)
Answer:
you will have a negitative amount
Explanation:
so there is 12 mounths in a year divided by 3 is 4 then times by 7 is 28.
so then 9,100 times .065 is 591.5 that is how much mony goes in the 3 months. Then you do 28 x 591.5 =16562 so you wont have any money left you will actually be in the negitatives.
Hoped that leped:P
Surface runoff is increased by deforestation. Details about surface runoff can be found below.
<h3>What is surface runoff?</h3>
Surface runoff is the overland flow of excess water (with or without accumulated contaminants) that cannot be absorbed by the ground as infiltration.
Surface runoff has adverse effects on the soil and crops.
Deforestation exposes the bare soil, hence, is likely to cause surface runoff.
Learn more about surface runoff at: brainly.com/question/14225734
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