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In how many years will Rs. 400 double itself?

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Intern
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In how many years will Rs. 400 double itself?  [#permalink]

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New post 04 Aug 2019, 07:26
1
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A
B
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D
E

Difficulty:

  75% (hard)

Question Stats:

19% (01:14) correct 81% (01:39) wrong based on 32 sessions

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In how many years will Rs. 400 double itself?

1. Rs. 80 Earms an interest of Rs. 6 in 6 months.

2. An investment of Rs 200 for a year and Rs. 90 for 3 months earn a total interest of Rs. 20.

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Intern
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Re: In how many years will Rs. 400 double itself?  [#permalink]

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New post 05 Aug 2019, 07:47
JayPatadiya wrote:
In how many years will Rs. 400 double itself?

1. Rs. 80 Earms an interest of Rs. 6 in 6 months.

2. An investment of Rs 200 for a year and Rs. 90 for 3 months earn a total interest of Rs. 20.

Posted from my mobile device


Why 'A' is not the answer? Can someone pls explain.
Intern
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Re: In how many years will Rs. 400 double itself?  [#permalink]

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New post 06 Aug 2019, 02:07
Mahi2409 wrote:
JayPatadiya wrote:
In how many years will Rs. 400 double itself?

1. Rs. 80 Earms an interest of Rs. 6 in 6 months.

2. An investment of Rs 200 for a year and Rs. 90 for 3 months earn a total interest of Rs. 20.

Posted from my mobile device


Why 'A' is not the answer? Can someone pls explain.


I will go with option A.
as using option A rate can be found out to be 15 %.
using which we can found time to be 100/15 yrs.
as the money doubles itself so interest will be 400 .
GMAT Club Bot
Re: In how many years will Rs. 400 double itself?   [#permalink] 06 Aug 2019, 02:07
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In how many years will Rs. 400 double itself?

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