Ouestion 9 plzz solve

Ouestion 9 plzz solve 8. The simple interest on a certain sum of money is of the sum in 6 -a years. Find the rate percent charged. What sum ot money borrowed on 24th May will amount to 10,210-20 on 17th October ot the same year at 5 percent per annum simple interest. O. In what time will the interest on a certain of money at 6% be ¯ of itself ? l. Ashok lent out 7,000 at 6% and 9,500 5%. Find his total income from the interest i 3 years. Raj borrows 8,000; out of which 4,500 5% and remaining at 6%. Find the fto interest paid by him in 4 years. Mohan lends 4,800 to John for 4 i ye and 2,500 to Shyam for 6 years

R= 5%
​T= 7 days left of may( 25th to 31st)+30 days of june +31 days of august +30 days of  september +the 17 days of october = total 146 days
​Therefore T in years = 146/365

Let the principal be P
​Therefore Interest= 10210.20 - P

​We know P=(I*100)/(R*T)

Therefore P={(10210.20 - P)*100}/5*(146/365)}
​                 P={(10210.20 - P)*​100*​365}/{​5*​146}

​365 is divided by 5 to give 73 which divides 146 to give 2 because 73*2 is 146. The 2 left in the denominator divides 100 to give 50
Therefore we get the final expression as 
P = {(10210.20 - P)*50}
P = 510510 - 50P
51P = 510510
P = 10010
​Therefore the principal or the sum deposited is ruppees 10010

 
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