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Pradeep Kumar

· started a discussion

· 1 Months ago

We can solve this question like they provided solution in question# 24. But it is taking too much time for calculating the principal amount for 8 months.

I did and I could get the a. as answer.

Total int.= 300 ( can be calculated by adding down payment and all installments and subtracting from price)

Principal for 1st month= 12500 ( price-down payment)

Principal for 2nd month=10900 ( 12500-1600)

Similarly calculating for all 8 months and adding

total principal= 55200

I=P*r*r/100

time=1 month( I am not sure why they are taking it 1 month in solution of 24th question)

300=(55200*r*1)/(12*100)

r=6.5 % p.a.

Question:
A house is sold for Rs. 30,000 cash or Rs. 17500 as cash down payment and installment of Rs. 1600 per month for 8 month. Determine the rate of interest correct to one decimal place, under the installment plan:
Options:
A) 6.5%
B) 6%
C) 4.5%
D) 5%
Solution:
Ans: (a)


Vani Bhaskar

· commented

· 1 Months ago

well bro!!

Sagar Sharma

· commented

· 1 Months ago

the proper method is that we calculate interest for each of the month so from this we can take R*T/100 common and add the principal from here we get T = 1/12

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