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
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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
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