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saveliy_v [14]
3 years ago
11

A number, half of that number, and one fifth of that number are added. The result is 51. What is the original number?

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
7 0
Let the original number be ‘x’
Then half of that number= 1/2x or simply x/2
Similarly one fifth of that number = x/5
According to the question
x+x/2+x/5=51
Taking LCM
10x/10+2x/10+5x/10=51
Multiplying 10 throughout
10x+2x+5x=510
17x=510
x=510/17
Therefore x=30
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Your goal is to get "x" by itself

So add 10 to each side like -5x-10+10=10+10 which is now -5x=20

Now divide the 20 by -5 which is -4

Answer: x=-4
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Answer:

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Step-by-step explanation:

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3 years ago
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If $5000 is invested at a rate of 3% interest
harkovskaia [24]

The value of the investment in 5 years is $5805.9

<h3>What is Interest ?</h3>

Interest is the amount earned over years for the amount invested.

It is given that

Principal = $5000

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Time = 5 years

Amount = ?

The Amount is given by the formula

Amount = P( 1 + (r/n))ⁿˣ

Here n = t = time period for which the investment has been done.

Amount = 5000( 1+(3/4 * 100)⁴ˣ⁵

Amount = 5000 (1.16)

Amount = $ 5805.9

Therefore , The value of the investment in 5 years is $5805.9

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