Question

In how many years will £7500 amount to £9000 at 4% simple interest

Answer 1

the rate of simple intrest is

9000 - 7500 = 1500₹

1500/4 = 375₹


7500/375 = 20%

20 ÷ 4% = 5 years

Answer 2

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Here is your answer
P = £ 7500
R = 4%
A = £ 9000
T = t let

Now SI = A - P
= 9000 - 7500
= £ 1500

AS WE KNOW THE FORMULA
SI = PRT/100
$1500 = \frac{7500 \times 4 \times t}{100} \\ t = \frac{1500 \times 100}{7500 \times 4} \\ t = 5 \: years$
Therefore Time is 5 years

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