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Jasmine invests £250 in a building society. After the first year her account

contains £262.50. After the second year it contains £280.88. Calculate the

percentage increase of the amount in her account:

(a) during the first year,(b) during the second year, (c) over the two years.

Give your answers correct to 2 decimal places.

please tomorrow is my exam . help me

Please find below the solution to the asked query:

Given : Jasmine invests £ 250 in a building society. After the first year her account contains £262.50.

a ) We calculate the percentage increase of the amount in her account during the first year, As :

Change in amount = £ 262.50 - £ 250 = £ 12.50

Then,

Percentage increase of the amount in her account during the first year = $\frac{12.50}{250}\times 100=\frac{{\displaystyle 1250}}{{\displaystyle 250}}=\mathbf{5}\mathbf{}\mathbf{\%}$

**( Ans )**

Also given : After the second year it contains £280.88.

b ) We calculate the percentage increase of the amount in her account during the second year, As :

Change in amount for second year = £ 280.88 - £ 262.50 = £ 18.38

Then,

Percentage increase of the amount in her account during the second year = $\frac{18.38}{262.50}\times 100=\frac{1838}{26250}\times 100=\frac{{\displaystyle 183800}}{{\displaystyle 26250}}=7.0019\approx \mathbf{7}\mathbf{.}\mathbf{00}\mathbf{}\mathbf{\%}$

**( Ans )**

) We calculate the percentage increase of the amount in her account over two years, As :

Change in amount for over two years = £ 280.88 - £ 250 = £ 30.88

Then,

Percentage increase of the amount in her account during the over two years = $\frac{30.88}{250}\times 100=\frac{30.88}{5}\times 2=\frac{{\displaystyle 61.76}}{{\displaystyle 5}}=12.352\approx \mathbf{12}\mathbf{.}\mathbf{35}\mathbf{}\mathbf{\%}$

**( Ans )**

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