6.  If a sum of money becomes 16 times in 4 years at SI. The rate of interest is?

375
650
440
475

```Answer

Answer: Option  A Explanation:Trick: 100(x-1) / T i.e. 100(16-1) / 4
X= No. of times it becomes ```

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7.  The SI on a sum of money will be Rs.2500 after 5 years. In the next 5 years Principal is trebled, what will be the total interest at the end of the 10th year?

Rs.15000
None of these
Rs.10000
Rs.20000

```Answer

Answer: Option  C Explanation:Trick: (n+1) * x  i.e.  (3+1) *2500
N= No. of times it become
X= SI ```

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8.  A certain sum of money amounts to Rs.800 in 2 years and to Rs. 920 in 3 years then the sum is?

420
580
560
500

```Answer

Answer: Option  C Explanation:Trick: (A2 –  A1)/ T2-T1
(920-800)  /1 = 120
P = 800-240 = 560 ```

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9.  A certain amount of money amounts to Rs. 720 in 2 years and to Rs. 870 in 4(1/2) years. Find the rate of interest if S.I. is reckoned?

None of these
12.50%
10%
12%

```Answer

Answer: Option  C Explanation:Trick: (A1*T2- A2*T1) / T2-T1
(720*9/2 )–(870* 2)   /  ( 9/2) -2 ```

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10.  A statue of 550BC is priced at 15000 rupees. But a person wants instalment on the statue. So he gaves 10000 rupee cash and make an instalment of rupees 650 for 8 months. Find the rate of interest charged by the shopkeeper?

10%
8%
6%
4%

```Answer

Answer: Option  C Explanation:Total amount buyer pays = 10000 + 650*8 = 15200
So to find the interest rate, 200 = 5000*(8/12)*R/100
So r= 6%. ```

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