Question

at what rate of sum of rupees 6000 will amount to rupees 7,800 in 5 years

Answer 1

7800-6000=1800
1800=6000×R×5/100
R=1800×100/6000×5
R=180000/30000
R=6
The rate of amount is 6

Answer 2

Dear Student,

◆ Answer -

r = 6 p.c.p.a.

● Explanation -

# Given -

P = Rs 6000

t = 5 years

Total = Rs 7800

# Solution -

Suppose r be rate of interest.

Total payment after 5 years is given by -

Total = P (100 + r×t) / 100

7800 = 6000 (100 + r×5) / 100

7800 / 60 = 100 + 5r

5r + 100 = 130

5r = 130 - 100

5r = 30

r = 6 p.c.p.a.

Hence, total payment after 5 years is is 6 p.c.p.a.

Thanks dear. Hope this helps you...