RRB Assistant Loco Pilot and Technician Model Paper 3 with solutions

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Question : 6 of 100

Marks: +1, -0

In what time will ₹300000 amount to ₹746496 at 20% compound interest?

3 yrs
4 yrs
5 yrs
6 yrs

Solution:

(c)

300000 [ 1 + { 20 } /{ 100 } ] ^ { t } = 746496

∴

[ { 6 }/ { 5 } ] ^ { t } = { 746496 } / { 300000 }

⇒

( { 6 }/ { 5 } ) ^ { t } = ( { 6 }/ { 5 } ) ^ { 5 }

⇒ t = 5

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