Q8) The Ratio of Principal and three years C.I is 216: 127. the difference between 3rd year C.I and 2nd year C. is Rs.245. find out the difference between C.I and S.l of same sum of money for 2 years if rate of interest increased by 38%. *
Answers
Answered by
4
Step-by-step explanation:
Let principal be P, then
Compound interest, CI :
CI
P
=
127
216
⇒CI=
216
127
P
CI=P[1+
100
R
]
T
−P
⇒
216
127
P=P[1+
100
R
]
3
−P
⇒
216
127
=(1+
100
R
)
3
−1
⇒
216
127
+1=(1+
100
R
)
3
⇒
216
343
=(1+
100
R
)
3
⇒1+
100
R
=(
216
343
)
3
1
⇒1+
100
R
=
6
7
⇒
100
R
=
6
7
−1
⇒R=
6
1
×100
⇒
R=16.67%=0.1667
Hence, 16.67%
Answered by
0
Answer:425.5
Step-by-step explanation:
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