Question

P=500 T =3 years R=6/: By unitary method

Answer 1

Step-by-step explanation:

(i) Principal (P) = Rs 2000

Rate of interest (R) = 5% p.a.

Time (T) = 5 years

Simple interest =  P×R×T100=2000×5×5100=Rs 500P×R×T100=2000×5×5100=Rs 500

(ii)  Principal (P) = Rs 500

Rate of interest (R) = 12.5% p.a.

Time (T) = 4 years

Simple interest = P×R×T100=500×12.5×4100=Rs 250P×R×T100=500×12.5×4100=Rs 250

(iii) Principal (P) = Rs 4500

Rate of interest (R) = 4% p.a.

Time (T) = 6 months 

T =612=12612=12 year (1 year = 12 months)

Simple interest = P×R×T100=4500×4×12100=4500×4×1100×2=Rs 90P×R×T100=4500×4×12100=4500×4×1100×2=Rs 90

(iv) Principal (P) = Rs 12000

Rate of interest (R) = 18% p.a.

Time (T) = 4 months =412=13yearTime (T) = 4 months =412=13year       (1 year = 12 months)

Simple interest = P×R×T100=12000×18×1100×3=Rs 720P×R×T100=12000×18×1100×3=Rs 720 

(v) Principal (P) = Rs 1000

Rate of interest (R) = 10% p.a.

Answer 2

Answer:

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