RRB Group D 23-Oct-2018 Shift 3 Solved Paper

Question : 77 of 100

Marks: +1, -0

Dilip invested

\Rs.100

for three years at a compound interest rate of

10 \% .

Haru also invested

\Rs.100

for three years at simple interest rate of

{x} \%

. At the end of three years, both received the same amount of money. What is the value of

{x} ?

Solution:

100[(1+{10}/{100})^{3}-1]

={100 ×x ×3}/{100}

100[({11}/{10})^{3}-1]=3 {x}

100[{1331-1000}/{1000}]=3 {x}

{331}/{10}=3 {x}

{x}={331}/{10 ×3}=11.03

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