Question

Find the unknown quantity in each of the following:- a) principal=400 rate of interest per annum=5% time =3 years simple interest=? Amount=?

Answer 1

Step-by-step explanation:

P=400

T=3 years

R=5%

SI= PTR/100= 400×3×5=6000

A=SI+P= 6000+400=6400

Answer 2

Answer: Simple Interest= Rs.60 & Amount=Rs.460

Step-by-step explanation:

• Given: Principal=Rs.400, Rate=5% and Time=3yrs.

• To find: Simple Interest and Amount.

• Solution:

Simple Interest=$\frac{P*R*T}{100}$

                        = $\frac{400*5*3}{100}$

                        = Rs.60

Amount= Principal + Simple Interest

            = Rs.400 + Rs.60

            = Rs.460

• Hence, the required S.I. is Rs.60 and Amount is Rs.460.

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