Question 59

A man gets double the amount in 7 years at a certain rate percent. In how many years, he gets 8 the amount at the same rate?

Name: A man gets double the amount in 7 years at a certain rate percent. In how many years, he gets 8 the amount at the same rate?
Uploaded: 2026-04-27T17:13:09.629835+05:30
Duration: 3 min 27 s
Description: A man gets double the amount in 7 years at a certain rate percent. In how many years, he gets 8 the amount at the same rate?

Solution

Using the formula : $$\frac{N_1-1}{N_2-1}=\frac{T_1}{T_2}$$

Let in $$t$$ years, he gets 8 times the amount.

=> $$\frac{2-1}{8-1}=\frac{7}{t}$$

=> $$\frac{1}{7}=\frac{7}{t}$$

=> $$t=49$$ years

=> Ans - (B)

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