Question

How many years will it take to get rupees 300 compound interest on rupees 150 is doubled in 3 years and compound?

Answer 1

Step-by-step explanation:

A=P(1+RT/100)n

solve by this formula.

Answer 2

Step-by-step explanation:

• So Rs 150 is doubled in 3 years when compounded annually.
• Now amount after 3 years will be 2 x 150 = Rs 300
• So now for compound interest we have
•             A = P (1 + r/100)^n
• A = 300
• P = 150
• T = 3 years
•              300 = 150 (1 + r/100)^3
•            (1 + r/100)^3 = 2 -------1
• So we need to find the time for Rs 300 compound interest.
• So new amount A = 300 + 300
•                                = 600
•     So P = Rs 300
• So we have
•                             A = P(1 + r/100)^n
•                            600 = 300 (1 + r/100)^n
•                       (1 + r/100)^n = 2
• From 1  we get
•                      (1 + r/100)^n = (1 + r/100)^3 = 2
•         Or  (1 + r/100)^n = (1 + r/100)^3
•                              (1 + r/100)^n = (1 + r/100)^3
•                             (1 + r/100)^n = (1 + r/100)^3
•        So n = 3
• Therefore it will take another 3 years

Reference link will be

https://brainly.in/question/31036806