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4 years ago

NEED HELP ASAP

Mathematics

1 answer:

noname [10]4 years ago

3 0

Answer:

percentage decrease is 70%

Step-by-step explanation:

To find percentage decrease of 2 quantities, we have to find the difference of the quantities and divide by the original quanity. Then we multiply by 100 to find the PERCENTAGE.

We will use formula:

$\frac{New-Old}{Old}*100$

Where

"New" is the latest quantity

"Old" is the first (previous) quantity

Here, New = 5.3 & Old = 17.71

We substitute into formula and find:

$\frac{New-Old}{Old}*100\\=\frac{5.3-17.71}{17.71}*100\\=-0.700*100\\=-70$

So we can say that the percentage decrease is 70%

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Solomon has read 1/3 of his book. He finishes the book by reading the same amount each night for 5 nights.

Nadusha1986 [10]

Answer:

A - Solomon read $\frac{2}{15}$ of the book each night.

B - The total number of pages in the book are 105.

Step-by-step explanation:

We are given that,

Solomon has read $\frac{1}{3}$ of a book.

So, $1-\frac{1}{3}=\frac{2}{3}$ of the book is left to be read.

Ques A: We have that,

In 5 nights, Solomon read $\frac{2}{3}$ of the book.

So, on 1 night, he will read, $\frac{2}{3}\times \frac{1}{5}$ = $\frac{2}{15}$ of the book.

Thus, Solomon read $\frac{2}{15}$ of the book each night.

Ques B: Let the total pages of the book = x.

Solomon reads 14 pages in 1 night. So, he reads, 14 × 5 = 70 pages in 5 nights.

Since, these 70 pages represent the $\frac{2}{3}$ of the book, he read in 5 nights.

So, $\frac{2}{3}$ of the total pages = 70

i.e. $\frac{2}{3}x=70$

i.e. x= 105

Hence, the total number of pages in the book are 105.

7 0

4 years ago

HELP PLEASE!!!!

bearhunter [10]

Wouldnt it be 10 since its similar to def?

8 0

3 years ago

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prohojiy [21]

Answer:

62.5%

Step-by-step explanation:

(10*8)/(16*8) = 0.625 = 62.5%

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