Question

The compound interest, calculated yearly, on
certain sum of money for the second
year is 71.089 and for the third year it k
197.90 Calculate the rate of interest and
the sum of money
Please explain ​

Answer 1

Answer: 9900

Explanation:given C. I for 2nd yr =1089

C. I for 3rd yr = 1197.90

Now difference between two C. I =1197.90-1089=1089.90

Now R%=100×108.90÷1089×100=10%

Then let P =x

SI= x ×10 ×1 ÷100=x÷10

Amt= 11x÷10

P for 2nd yr =11x÷10

SI= 11x ÷100

We know that SI= CI

Given that

11x÷100=1089

x= 1089×100÷11=9900

Therefore total sum is 9900

Step-by-step explanation:

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Answer 2

Answer:

According to universal law of gravitation and Newton third law, we know that the force of attraction between two objects is same but in opposite direction. Thus the earth attracts the moon with the same force as the moon exerts on earth but in opposite directions.