Latest TCS Aptitude Question SOLUTION: 16. What sum would amount to Rs. 26,620 in three years at 10% p.a. rate of compound interest? a) 10,000 b) 20,000 c) 30,000 d) 40,000

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16. What sum would amount to Rs. 26,620 in three years at 10% p.a. rate of compound interest?
a) 10,000
b) 20,000
c) 30,000
d) 40,000

Asked In TCS rajendra prasad (9 years ago)

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Ann  (9 years ago)

compund interest
A=P(1+r/n)^nt
since per anum, n=1
A=26620
on substitution
P=20,000

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VINOD  (9 years ago)

let sum =x
x[1+10/100]^3=26620
x=26620x[10/11]^3
x=20000

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satyarth  (9 years ago)

we go through by option elemination since amount is 26,620 so option 3 and 4 get wrong now the ROI is 10% then the only 20,000 is the only amount whose compound interest became 26,620 not only by conventional method we just look that in 3yr at rate of 10% p.a at simple interest it would be approx 6000 and so for compound it should be lumpsum 6600 so we ticked 2. 20,000

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