Latest TCS Aptitude Question SOLUTION: if certain sum of money at simple interest amounts to rs 2800 in 2yrs and to rs 3250 in 5yrs then the rate of interest per annum?

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if certain sum of money at simple interest amounts to rs 2800 in 2yrs and to rs 3250 in 5yrs then the rate of interest per annum?

Asked In TCS ratna (11 years ago)

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Read Solution (2) :

Rajesh kumar  (11 years ago)

difference of 5 year 3250 rs
-2 year - 2800 rs
----------------------------
3year intrest = 450rs
1year intrst= 150rs
2year intrest=300rs
principal=2800-300=2500rs
si=(p*R*T)/100
300=(2500*r*2)/100
r=300*100/2500*2=6%
rate=6%.

Is this solution Helpfull? Yes (37) | No   

Pritam Dutta  (7 years ago)

from the above question we can write that,
P+(2*P*R/100)=2800
and,
P+(5*P*R/100)=3250
after solving the above two equations we can write P=2500 and r=6%

Is this solution Helpfull? Yes (1) | No   

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