self Maths Puzzle Numerical Ability Simple & Compound Interest

The difference between simple interest and compound on Rs. 1200 for one year at 10% per annum reckoned half-yearly is:

A. Rs. 2.50 B. Rs. 3
C. Rs. 3.75 D. Rs. 4
E. None of these

Read Solution (Total 2)

S.I = PRT/100= 1200*10*1/100=120

NOW,( { Half yearly C.I. } - 1200 )

C.I.= [{P(1+R/2/100)^2N}-1200] = [ {1200(1+5/100)^2= 1323 } -1200 ]=123

DIFFERENCE = 123-120 = 3
9 years agoHelpfull: Yes(5) No(1)

Answer: Option B

Explanation:

S.I. = Rs 1200 x 10 x 1 = Rs. 120.
100

C.I. = Rs. 1200 x 1 + 5 2 - 1200 = Rs. 123.
100

Difference = Rs. (123 - 120) = Rs. 3.
10 years agoHelpfull: Yes(0) No(3)

self Other Question

If the simple interest on a sum of money for 2 years at 5% per annum is Rs. 50, what is the compound interest on the same at the same rate and for the same time?

A. Rs. 51.25 B. Rs. 52
C. Rs. 54.25 D. Rs. 60
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The compound interest on a certain sum for 2 years at 10% per annum is Rs. 525. The simple interest on the same sum for double the time at half the rate percent per annum is:

A. Rs. 400 B. Rs. 500
C. Rs. 600 D. Rs. 800