Question

A some of money amount to ₹5200. In 5 years and to ₹5618 in 7 years. Find the sum and rate of interest. Pls I need it..
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Answer 1

Answer:

6%

Explanation:

Here , A2 = ₹ 5680 , T1 = 5 years , A1 = ₹ 5200 , T2 = 7 years

R =

A1 - A2

× 100

A2T1 - A1T2

R =

5200 - 5680

× 100

5680 × 5 - 5200 × 7

R =

- 480

× 100

28400 - 36400

=

- 480

× 100

- 8000

R = 6%

Answer 2

Answer:

P + SI for 7 years = 5680…………(II)

On subtracting equation (I) from (II)

SI for 2 years = 480

∴ SI for 1 years = 240

∴ From equation (I),

P + 5 \times 240 = 5200

=> P = 5200 - 1200 = 4000 Rs.

\therefore R = \frac{SI\times 100}{T\times P}

= \frac{240\times 100}{1\times 4000} = 6\%

Explanation:

hope it is helpful for you.

I have no time for solving this question,so I cheated it from Google.