SSC GD Constable 5 Feb 2025 Shift 1 Paper

Section: Elementary Mathematics

Question : 52 of 80

Marks: +1, -0

When difference between compound and simple interest for three years is ₹244 at 5% interest per annum, the principal is ₹_________

Solution:

Difference

(D)=P ×(1+r \/ 100)^3-P-P × r \/ 100 × t

Where,

P =

Principal,

t =

Time
Calculation:

\;244=P ×(1+5 \/ 100)^3-P-P × 5 \/ 100 × 3

\;⇒ 244=P ×(1+0.05)^3-P-P × 0.15

\;⇒ 244=P ×(1.157625)-P-0.15 P

\;⇒ 244=1.157625 P-1.15 P

\;⇒ 244=0.007625 P

\;⇒ P=244 \/ 0.007625

\;⇒ P=32000

Go to Question:

Prev Question

Next Question