Question

find the principal amount (P) for the following cases.( a) r = 4.5 %, n = 5 years, I = 250 . sollution​

Answer 1

Answer:

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Step-by-step explanation:

To find Time when Principal Interest and Rate are given the rules are.

Interest = (Principal × Rate × Time)/100

Time = (100 × Interest)/(Principal × Rate)

Examples to find Time (T) when Principal (P), Interest (I) and Rate (R) are given:

1. Find Time when, Principal = $ 1500; Interest = $ 450; Rate = 5% p.a.

Solution:

Principal = $ 1500,

Interest = $ 450,

Rate = 5% p.a.

Time = (100 × Interest)/(Principal × Rate)

= (100 × 450)/(1500 × 5)

= 45000/7500

= 6.

Therefore, Time (T) = 6 years.

Answer 2

Answer:

Interest = (Principal × Rate × Time)/100

Time = (100 × Interest)/(Principal × Rate)

Examples to find Time (T) when Principal (P), Interest (I) and Rate (R) are given:

1. Find Time when, Principal = 1500; Interest =1500;Interest= 450; Rate = 5% p.a.

Solution:

Principal = $ 1500,

Interest = $ 450,

Rate = 5% p.a.

Time = (100 × Interest)/(Principal × Rate)

= (100 × 450)/(1500 × 5)

= 45000/7500

= 6.

Therefore, Time (T) = 6 years.