Wple 7:
Iquired time is 12 years.
At what rate per cent per annum would a sum beco
Solution
: Given, Time (T) = 14
ears - 100
7 years
Let principal be * X. Then, amount would be 73x.
SI = (3x - x) = 2x
So,
R : 100 x SI
PXT
100 x 2x
100
7
X x 100
100 x 2x x7 -14%
X x 100
= 14%
Hence, the required rate of interest is 14%.
da 08.19882@a
EXERCISE 13.1
Find the simple interest, if :
(a) Principal = * 1200, Rate = 5% and Time = 3 years.
(b) Principal = * 4500, Rate = 6-% pa and Time = 9 months.
(c) Principal = * 6050, Rate = 6.5% pa and Time = 4 years.
(d) Principal = 8250, Rate = 9% pa and Time = 18 months.
Ranjan deposits 4200 in his saving account. What amount
interest at the rate of 6.25% per annum?
Samrat took a loan of 48000 for motorcycle from PNB at th
amount will he give to bank to clear off his debt?
Sushil Kumar borrowed a loan on his policy at 9% per annum.
the sum of loan borrowed by him.
At what rate * 56,000 will give * 2800 as interest in 2 years?
lunt nt of interest will 5000 amount to 6200 irprincipal Jupiter rate 68114 percentage and time 9th month
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