Math, asked by bsi, 1 year ago

I will definitely make brain list if you will give me the answer of question that soon in pic of question number 6 7 8 and 9 I will definitely make brain least 2 times and

Attachments:

Answers

Answered by inhumandrowsey
1

5)

Principal = ?

CI = 3520

Rate = 20%

Time 2 years

CI = P (1+r/100)^t - P

3520 = P (1 + 20/100)² - P

3520 = P (6/5)² - P

3520 = 36P/25 - P

3520 = 11P/25

11P = 88000

P = 88000/11

P = 8000

---------------------------------------------------------------------------------------

6)

Principal = 2000

Amount = 2420

Rate = 10%

Time = t

Amount = Principal (1 + r/100)^t (where r is rate and t is time)

2420 = 2000 (1 + 10/100)^t

2420/2000 = (1 + 1/10)^t

(11/10)^t = 2420/2000

(11/10)^t = 121/100

(11/10)^t = (11/10)²

Hence t = 2 years

-----------------------------------------------------------------------------------------------------------

7)

Amount = 661.5

Principal = 600

Time = 2 years

Rate = ?

Amount = Principal (1 + r/100)^t

600 (1 + r/100)² = 661.5

(1 + r/100)² = 661.5/600

(1 + r/100)² = 6615/6000

(1 + r/100)² = 1323/1200

(1 + r/100)² = 441/400

(1 + r/100) = √441/400

(1 + r/100) = 21/20

r/100 = 21/20 - 1

r/100 = 1/20

r = 100/20

r = 5%

---------------------------------------------------------------------------------------------------------------

8)

Solution is in the pic attached

--------------------------------------------------------------------------------------------------------------

9)

Amount = 15972

Principal = 12000

Rate = 10%

Principal (1 + r/100)^t = Amount

12000 (1 + 10/100)^t = 15972

(1 + 1/10)^t = 15972/12000

(11/10)^t = 5324/4000

(11/10)^t = 1331/1000

(11/10)^t = (11/10)³

t = 3

hence time is 3 years



Attachments:

bsi: give me the answer of 8 and five
inhumandrowsey: did
inhumandrowsey: mark as brainliest
bsi: give answer of 8and5
inhumandrowsey: look again i have uploaded answer for 8 and solved 5
inhumandrowsey: now mark brainliest
bsi: where please answer again i cant find8
bsi: 5 answer
inhumandrowsey: refresh your page you will get pic and i have solved 5 in the top check again
Answered by anjalmaheshwari497
0

Step-by-step explanation:

  1. please mark only one question please
Similar questions