David has $5 in his wallet. This was 10% of the amount that he received from his mother. Find the total amount of money that David received from his mother.
35% of the number of books Ibrahim owns are fiction boos, find:
a.) the total number of books he owns.
b.) the number of non-fiction books he owns.
Please show me your complete workings. Thank you very much.
non-algebraic way:
5% = $5
so 1% = 5/5 = $1
100% = 100(1) = $100
algebraic way:
.05x = 5
x = 5/.05 = 100
Do your second question in the same way.
100 / 10 = 10
5 x 10 = 50
The answer is $50
10%=$5
1%=$5/10=0.5
100%=0.
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Sure! To find the total amount of money that David received from his mother, we can set up an equation using the given information.
Let's say the total amount of money David received from his mother is x.
According to the given information, $5 is 10% of x. We can write this as:
10% of x = $5
To solve for x, we can first convert the percentage to a decimal. 10% is equivalent to 0.10. So the equation becomes:
0.10x = $5
To solve for x, we divide both sides of the equation by 0.10:
x = $5 / 0.10
x = $50
Therefore, the total amount of money that David received from his mother is $50.
Now let's move on to the second part of the question about Ibrahim's books.
Let's say the total number of books Ibrahim owns is y.
According to the given information, 35% of the books are fiction books. This means that 35% of y is the number of fiction books.
To find the number of non-fiction books, we need to subtract the number of fiction books from the total number of books.
Let's solve it step by step:
a) The total number of books Ibrahim owns can be calculated using the equation:
35% of y = number of fiction books
To convert the percentage to a decimal, we divide 35% by 100: 35% = 0.35. So the equation becomes:
0.35y = number of fiction books
b) The number of non-fiction books can be found by subtracting the number of fiction books from the total number of books. So the equation becomes:
Total number of books - number of fiction books = number of non-fiction books
Now, we can solve for y.