What is the rate of interest per annum I An amount double itself at SI in 10 years II The difference...........

Quantitative Aptitude ( CCS) Data Sufficiency

What is the rate of interest per annum ?

I.An amount double itself at SI in 10 years

II.The difference between SI and CI on an amount of Rs.20,000 in 2 years is Rs.200

III.The CI accured in 8 years is more than the amount.

Either I or II is sufficient

Both I and II are sufficient

Both II and III are sufficient

Either I or III is sufficient

None of these

From I :
Principal = P, Amount = 2P
Interest = 2P – P = P
SI =P = P*R*10/100 => R = 10%
From IIpr²/100² = diff

20000*r/10000 = 200
R =10%

Hence, option 1 is the correct answer.

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