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prakash deep

· started a discussion

· 1 Months ago

another way (Question: 257172.0 )

true discount ko amount se count karte h aur SI ko principal se

TD*AMOUNT= SI*PRINCIPAL
TD(P+SI)= SI*P
TD*SI=SI*P - TD*P
TD*SI=P(SI-TD)
P=(TD*SI)/(SI-TD)=(20*22)/(22-20)=220

Question:

The interest on a certain sum of money is Rs.22 and the true discount on the same sum for the same time and the same rate is Rs.20, find the sum.

Options:
A)

Rs.212

B)

Rs.220

C)

Rs.210

D)

Rs.200

Solution:

Ans: (b)

  

vijaykumar

· commented

· 1 Months ago

thank yaar...very greatful to u

Varun

· commented

· 1 Months ago

thanks bhai
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