Question

in what time will a sum of 8000 at 10% p.a. same interest earned the same interest as same of 6000 at 4% p.a. simple interest in 5 years​

Answer 1

solution :

PTR/100

SI = (6000 × 4 × 5)/100

SI = 120000/100

SI = 1200

1200 = (8000 x T x 10)/100

1200 = 80 x T x 10

1200 = 80 x 10 x T

T = 1200/80 x 10

T = 30/2 x 10

T = 15 x 10

T = 150

Extra information :

• Gain = SP - CP

• loss = CP - SP

• Gain % = gain x 100/CP

• Loss % = loss x 100/CP

• SP = (100 + gain %) x CP/100

• CP = (100 - loss%) x CP/100

• Discount % = Discount x 100/market price