Question

a man invests Rs . 3000 at the rate of 5% per annum. how much more should he invest at the rate of 8%, so that he can earn a total of 6% per annum?​

please explain properly

Answer 1

Answer:

1500

Step-by-step explanation:

Let the extra money invested = ? P

According to the question .

(3000 x 5 x 1)/100 + (P x 8 x 1)/100 = [(3000 + P) x 6 x 1)]/100

? 15000 + 8P = 18000 + 6P

? 2P = 18000 - 15000

? P = 3000/2 = ? 1500

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Answer 2

QUESTION:-

A man invests Rs . 3000 at the rate of 5% per annum. how much more should he invest at the rate of 8%, so that he can earn a total of 6% per annum?​

SOLUTION:-

Present rate of interest = 5% (Cheaper quantity)

New rate of interest = 8% (Dearer Quantity)

Mean rate of interest = 6%

Ratio of Dearer Value : Cheaper Value = m-c : d-m = 6-5 : 8-6 = 1 : 2

Dearer Value = Rs.3000/2

                        = Rs.1500

              Hope it helps :D