the difference between the SI and CI of a certain sum of money is Rs.48 at 20% per annum for 2 years.find the principal.
Hint:Assume the principal as Rs.100
Answers
Answered by
4
Step-by-step explanation:
C.I.=P[(1+
100
r
)
n
−1]
=P[(1+
100
20
)
2
−1]
=P[(
5
6
)
2
−1]
=P[
25
36−25
]
C.I=
25
11P
S.I=
100
P×20×2
=
5
2P
Given
C.I−S.I=Rs. 48
⇒
25
11P
−
5
2P
=48
⇒
25
11P−10P
=48
⇒P=25×48
⇒P=Rs. 1200.
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