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ss7ja [257]
2 years ago
14

Frank invests $1,000 in simple interest investment account that pays 8% a year. After a number of years, he withdraws his balanc

e of $2,200. Using the formula I = P r t, how many years was his money invested? Work backwards-but find the Interest first!
Mathematics
1 answer:
elena-s [515]2 years ago
6 0

Answer:

15 years

Step-by-step explanation:

Given data

P=$1,000

R=8%

A= $2200

I= A-P

I=2200-1000

I=$1200

Applying the formula

I=PRT/100

1200=1000*8*T/100

cross multiply

1200*100= 8000T

120000= 8000T

divide both sides by 8000

T=120000/8000

T=15  years

Hence the time is 15 years

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you deposit $6,700 in a money market account that pays an annual interest of 3.3% the interest is compounded quarterly how much
Rufina [12.5K]

so it is compounded 4 times in a year in 4 years we can take it as 16 terms

a=6700(1+3.3/100)^16

a=6700(1+33/1000)^16

a=6700(1000/1000 + 33/1000)^16

a=6700(1.033)^16

a=6700*1.681144887891022

a=6700*1.6811

a=11263.23

4 0
3 years ago
Ryan drinks 10 liters of water in a week. How much liters of water he consumes each day?
exis [7]

Answer: 1.428 lts of water each day.

1 week includes 7 days so we can say,

7 days --> 10 liters of water

1 day --> 10/7 liters of water

            = 1.428 liters of water

Brainliest pls if it was correct!

7 0
3 years ago
Please help super easy. (am dum)
ycow [4]

Answer:

Here is the answer

Step-by-step explanation:

36 = 3x2x3x2

8 = 2x2x2

42 = 7x3x2

4 0
3 years ago
An ostrich that is 100 inches tall is 15 inches taller than 5 times the height of a kiwi. What is the height of a kiwi in inches
Solnce55 [7]
The kiwi is 17 inches
5 0
3 years ago
mrs. Hanes paid $43.90 for 12.7 gallons of gas.she used some credit card points to get $0.52 off per gallon. what is the origina
Arisa [49]
This is how you get your answer you take 43.9 and divide it by 12.7 which gives you 3.4566 and add .52 to get 3.9766 then you multiply that number by 12.7 which gives you 50.5 so $50.5 is how much she would have originally payed.

5 0
4 years ago
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