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3 years ago

Joe has read 30% of a book. He has 49 more pages to finish. How many pages are there in the book?

Mathematics

1 answer:

sasho [114]3 years ago

7 0

Answer:

70 pages

Step-by-step explanation:

100%-30%=70%

70% of the book is 49 pages.

x is the total number of pages.

0.7x=49

7x=490

x=70

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Fiesta28 [93]

Answer:

$\frac{x+xy}{y}$

Step-by-step explanation:

Given

$\frac{x}{y}$ + x

Multiply x by $\frac{y}{y}$ to create a common denominator

= $\frac{x}{y}$ + x × $\frac{y}{y}$

= $\frac{x}{y}$ + $\frac{xy}{y}$

= $\frac{x+xy}{y}$

7 0

3 years ago

$13,957 is invested, part at 7% and the rest at 6%. If the interest earned from the amount invested at 7% exceeds the interest e

ch4aika [34]

Answer:

The Amount invested at 7% interest is $12,855

The Amount invested at 6% interest = $1,102

Step-by-step explanation:

Given as :

The Total money invested = $13,957

Let The money invested at 7% = $p_1$ = $A

And The money invested at 6% = $p_2$ = $13957 - $A

Let The interest earn at 7% = $I_1$

And The interest earn at 6% = $I_2$

$I_1$ - $I_2$ = $833.73

Let The time period = 1 year

Now,<u> From Simple Interest method</u>

Simple Interest = $\dfrac{\textrm principal\times \textrm rate\times \textrm time}{100}$

Or, $I_1$ = $\dfrac{\textrm p_1\times \textrm 7\times \textrm 1}{100}$

Or, $I_1$ = $\dfrac{\textrm A\times \textrm 7\times \textrm 1}{100}$

And

$I_2$ = $\dfrac{\textrm p_2\times \textrm 6\times \textrm 1}{100}$

Or, $I_2$ = $\dfrac{\textrm (13,957 - A)\times \textrm 6\times \textrm 1}{100}$

∵ $I_1$ - $I_2$ = $833.73

So, $\dfrac{\textrm A\times \textrm 7\times \textrm 1}{100}$ - $\dfrac{\textrm (13,957 - A)\times \textrm 6\times \textrm 1}{100}$ = $833.73

Or, 7 A - 6 (13,957 - A) = $833.73 × 100

Or, 7 A - $83,742 + 6 A = $83373

Or, 13 A = $83373 + $83742

Or, 13 A = $167,115

∴ A = $\dfrac{167115}{13}$

i.e A = $12,855

So, The Amount invested at 7% interest = A = $12,855

And The Amount invested at 6% interest = ($13,957 - A) = $13,957 - $12,855

I.e The Amount invested at 6% interest = $1,102

Hence,The Amount invested at 7% interest is $12,855

And The Amount invested at 6% interest = $1,102 . Answer

8 0

3 years ago

the sides of a triangular birdcage are consecutive intergers if tge perimeter is 114 cm what is tge length of each side

alexandr402 [8]

Let:
x = first consecutive integer (or first side of △)
x + 1 = second consecutive integer (or second side of △)
x + 2 = third consecutive integer (or third side of △)

The formula for a perimeter of △ is simply the addition of three sides (or length). Since the given perimeter is 114 cm,
x + x+1 + x+2 = 114
3x + 3 = 114
3x = 114 - 3
3x = 111
x = 111 /3 = 37 cm
The three sides are 37 cm, 38 cm, and 39 cm.

5 0

2 years ago

Which option best describes the likelihood of Jennifer picking a green ball

-Dominant- [34]

U didn’t give us the options soooo uhhhh C

7 0

3 years ago

John has 260 apples. 1/2 of the apples are green and 1/4 of the apples are bad. The rest of the apples are red. How many red app

chubhunter [2.5K]

Answer:

Step-by-step explanation:

1/2 which is half of total is green

1/4 is bad and the remaining apples are red

1/2 of 260 = 130 green apples

1/4 of 260 = 65 bad apples

the remaining is 1/4 which is equal to 65 are red apples

7 0

3 years ago

Read 2 more answers