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3 years ago

The sum of two number is 25 and their difference is 15

2 answers:

6 0

Hey! Since the sum of their number is 25 and the difference is 15, we can start by subtracting 25 from 15, to end up with 10. Then, we divide that number up by two because they are two numbers and we get 5. 5 is our first number and if we add 15 back into our second number, we would get 20.

Therefore. The numbers you are looking for is 5 and 20. Where the make the sum of 25 and the difference between them is 15.

Kamila [148]3 years ago

4 0

SOLUTION: the sum of two numbers is 25 and their difference is 15. what are the two numbers? let x =one number and y= the other number. the corresponding modeling system is {x+y=25 x-y=

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Bas_tet [7]

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Step-by-step explanation:

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3 years ago

Hannah earned $1536 in 8 years on an investment at a 4% annual simple interest rate. How much was Hannah’s investment? $4800 $30

Nonamiya [84]

Simple interest calculates interest on initial amount only. The investment by Hannah was : Option A: $4800

<h3>How to calculate simple interest amount if rate of interest is R% annually?</h3>

Suppose that the initial amount of investment is P

And the rate of simple interest is R% annually,

And the time of investment is T years.

Then, the amount of simple interest is calculated as:

$I = \dfrac{P \times R \times T}{100}$

For the given case, let the initial investment Hannah made was of $P

Then, the time of investment is T = 8 years, R% = 4%, and given that Hannah earned interest I = $1536

Putting values in the above formula, we get;

$I = \dfrac{P \times R \times T}{100}\\\\1536 = \dfrac{P \times 8 \times 4}{100}\\\\P = \dfrac{153600}{32} = 4800$

Thus,

The investment by Hannah was : Option A: $4800

Learn more about simple interest here:

brainly.com/question/5319581

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2 years ago

July average temperature: 78°F,January average temperature: 52°F What is the percentage difference?

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2 years ago

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Step-by-step explanation:

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