MATHEMATICS MIDDLE SCHOOL

Sandra deposited $2,500 into a simple interest account. She earned $75 in interest after 1 year. Ron deposited $8,000 into an account that has the same interest rate as Sandra’s account. How much money did Ron earn in interest after 1 year? Show your work please 30 points!!!HURRY PLEASE!!!!!!

Answers

Answer 1

Answer:

Answer:

$\$240$

Step-by-step explanation:

we know that

The simple interest formula is equal to

$I=P(rt)$

where

I is the Final Interest Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

in this problem we have

Sandra

$t=1\ year\n I=\$75\n P=\$2,500\nr=?$

substitute in the formula above

$75=2,500(r(1))$

solve for r

$r=75/2,500)$

$r=0.03$

Convert to percentage form

$r=0.03*100=3\%$

Ron

$t=1\ year\n I=?\n P=\$8,000\nr=0.03$

substitute in the formula of interest

$I=8,000(0.03*1)$

$I=\$240$

Answer 2

Answer:

Answer:

it is 240

it zi 204 because if you do the work you will get that

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280 % increases hope that this helps

Whats the difference between linear equations and quadratic equation

Answers

Answer:

Step-by-step explanation:

A linear equation in two variables doesn't involve any power higher than one for either variable. It has the general form Ax + By + C = 0, where A, B and C are constants. ... A quadratic equation, on the other hand, involves one of the variables raised to the second power. It has the general form y = ax2 + bx + c

1/2 of Pete's class brought in valentines. 3/4 of the kids who brought in valentines also brought on candy. If there are 24 students in Pete's class, how many students brought in valentines and candy?

Answers

24÷2 (because 1/2 is equivalent to 2) =12 12÷ 4 (because 3/4 is equivalent to 4) = 3. 3 students brought in valentine's and candy

Answer:

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You use 3 cans of soup to serve 5 people. If you want to serve 20 people, what should you do?

Answers

If you would like to know how many cans of soup you will need, you can calculate this using the following steps:

3 cans of soup ... 5 people
x cans of soup = ? ... 20 people

3 * 20 = 5 * x /5
x = 3 * 20 / 5
x = 12 cans of soup

The correct result would be 12 cans of soup.

Most of the information’s that are required arealready given in the question.
The number of cans used to serve 5 people = 3
Then
The number of cans required to serve 1 people = (3/5) * 1
   = (3/5) cans
So
The number of cans required to serve 20 people = (3/5) * 20 cans
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If Taryn and Alistair want to earn an additional $735 each , how many hours will each spend mowing lawns

Answers

If Taryn mowed 9 lawns in 7.5 hours and earned $112.50, then her hourly rate is:

$112.50 / 7.5 hrs = $15 per hour

If Alistair mowed 7 lawns in 5 hrs and earned $122.50, then her hourly rate is:

$122.50 / 5 hrs = $24.50 per hour

To earn an additional $735 each, they should work the following hours.

Taryn: $735 / $15 = 49 hours

Alistain: $735 / $24.50 = 30 hours

Taryn and Alistair will each spend 49 hours mowing lawns to earn an additional $735 each.

To find out how many hours Taryn and Alistair will each spend mowing lawns to earn an additional $735 each, we need to divide $735 by their hourly rate. Let's assume their hourly rate is the same for both of them. If their hourly rate is $15, then dividing $735 by $15 gives us 49. Therefore, Taryn and Alistair will each spend 49 hours mowing lawns to earn an additional $735 each.

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A store has apples on sale for $3.00 for 2 pounds. How many pounds of apples can you buy for $9? If an apple is approximately 5 ounces, how many apples can you buy for $9? Explain your reasoning.

Answers

we know that

A store has apples on sale for $ $3.00$ for $2$ pounds

Part a) How many pounds of apples can you buy for $ $9$ ?

by using proportion

$(3)/(2)(usd)/(pound) =(9)/(x) (usd)/(pound) \n \n 3x=9*2\n \n x=(18)/(3) \n \n x=6 pounds$

therefore

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Part b) If an apple is approximately $5$ ounces, how many apples can you buy for $ $9$ ?

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step 1

convert ounces to pounds

$1apple=(5)/(16)pounds$

by using proportion

$(1)/((5)/(16))\ (apples)/(pounds) =(x)/(6) (apples)/(pounds)\n \n x(5)/(16) =6\n \n x=(16*6)/(5) \n \n x=19.2 apples$

therefore

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about $19 apples$

Since 2 pounds is $3 and you have $9, you would do:

$(3)/(2) = (9)/(x)$ , x= # of pounds of apples

You do cross multiplication to get:

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x=6

1 lb= 16 oz

So $6*16=96$ to get the number of ounces you can buy for $9.

Then divide 96 by 5, so that is ABOUT 19 APPLES.

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