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r-ruslan [8.4K]
4 years ago
14

In 2 years i will be twice as old as i was 20 years ago how old am I?

Mathematics
2 answers:
Vsevolod [243]4 years ago
7 0
You are going to be 40 years old.
Twice = 2
2 times 20 is 40.
Jlenok [28]4 years ago
6 0

Answer:

I am 42 years old

Step-by-step explanation:

Given : In 2 years i will be twice as old as i was 20 years ago.

To Find : Current age

Solution :

Let the current age be x years.

After two years i will be (x+2) years

20 years ago i was (x-20)years

Since we are given that in 2 years i will be twice as old as i was 20 years ago.


⇒x+2 = 2 (x-20)


⇒x+2 = 2x-40


⇒40+2 = 2x-x


⇒42 = x


Thus my current age 'x' = 42 years.

Hence i am 42 years old


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Mateo's sister Paid off her student loans $5000 in 30 years if she made a payment of $152.35 each month what was a simple intere
belka [17]

Answer:

3.23%.

Step-by-step explanation:

Please consider the complete question.

Mateo's sister Paid off her student loans $5000 in 3 years if she made a payment of $152.35 each month what was a simple interest rate for a way around it to the nearest hundred

Let us find total amount paid by Mateo's sister in 3 years.

1 year = 12 months

3 years = 12*3 months = 36 moths.

\text{Amount paid in 36 months}=36\times \$152.35

\text{Amount paid in 36 months}=\$5484.6

Now, we will use simple interest formula to solve our given problem.

A=P(1+rt), where,

A = Total amount after t years.

P = Principal amount,

r = Annual interest rate in decimal form,

5484.6=5000(1+r(3))

\frac{5484.6}{5000}=\frac{5000(1+30r)}{5000}

1.09692=1+3r

1.09692-1=1-1+3r

3r=0.09692

r=\frac{0.09692}{3}

r=0.032306=3.2306\%\approx 3.23\%

Therefore, the interest rate was 3.23%.

5 0
3 years ago
Disney use 42 feet of fencing to wrap around the perimeter of a garden the width of the Garden in 7 ft what is the length
Scrat [10]
Perimeter is 2L + 2W
Now plugging in for values we know
42=2L + 2(7)
Move the 14 to the other side to isolate the variable L
28=2L
Divide by 2
L= 14 feet
L is length
5 0
3 years ago
What is x in the equation above?
abruzzese [7]

Answer:

7

Step-by-step explanation:

5 0
4 years ago
Read 2 more answers
The pyramids are similar. Find the volume, in cubic inches, of pyramid B. Explain
OleMash [197]

Answer:

37.03703704 in^3

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3 years ago
I don't understand how you do it
Alekssandra [29.7K]
Container A:
y=-6x+800
800 is y intercept( it already have 800 before leaking)
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container B:
y=-10x+1000
same thing with a container B
-6x+800=-10x+1000  =   800-6x=1000-10x
6 0
3 years ago
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