Mr. Rahman invests Tk. 2,400 in a bank at 5% interest. How much additional money must he invest at 8% interest so that the total annual income will be equal to 6% of his entire investment?

Created: 5 months ago | Updated: 1 week ago

Job Solution Shahjalal Islami Bank Ltd Shahjalal Islami Bank Ltd. || Trainee Senior Officer (30-11-2018) || 2018 গণিত

Let, Tk. X is the additional money Mrs. Barbara invests at 8% interest

∴ Her total investment = (x + 2,400) Tk.

According to the question,

$(2, 400 \times 5 %) + (x \times 8 %) = (2, 400 + x) \times 6 % \Rightarrow 120 + \frac{8 x}{100} = (2400 + x) \times \frac{6}{100} \Rightarrow 120 + \frac{8 x}{100} = 144 + \frac{6 x}{100} \Rightarrow \frac{8 x}{100} - \frac{6 x}{100} = 144 - 120 \Rightarrow \frac{2 x}{100} = 24 \Rightarrow \frac{x}{50} = 24$

$∴ x = 1200$ টাকা ans.

5 months ago

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A team of 2 men and 5 women completed one-fourth of a job in 3 days. After 3 days another man joined the team and they took 2 days to complete another one-fourth of the job. How many men can complete the whole job in 4 days?

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Job Solution Shahjalal Islami Bank Ltd Shahjalal Islami Bank Ltd. || Trainee Senior Officer (30-11-2018) || 2018 গণিত

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Job Solution Shahjalal Islami Bank Ltd Shahjalal Islami Bank Ltd. || Trainee Senior Officer (30-11-2018) || 2018 গণিত

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Created: 5 months ago | Updated: 1 week ago

Job Solution Shahjalal Islami Bank Ltd Shahjalal Islami Bank Ltd. || Trainee Senior Officer (30-11-2018) || 2018 গণিত

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Mr. Rahman invests Tk. 2,400 in a bank at 5% interest. How much additional money must he invest at 8% interest so that the total annual income will be equal to 6% of his entire investment?

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