Management Aptitude Test Dec 2019 Paper

Question : 112 of 200

Marks: +1, -0

₹ 8000

becomes

₹ 10640

in 4 yr at a certain rate of interest. If the rate becomes

4 / 3

times of itself, then amount of the same principal in 6 yr will be

Solution:

{\SI}

₹ 8000

for

4 {\yr}=₹(10640-8000)

=₹ 2640

R=({100 × {\SI}}/{\P × T})

=({100 × 2640}/{8000 × 4}) \%

per annum

={33}/{4} \%

per annum

=8 {1}/{4} \%

per annum
New rate

=({4}/{3} × {33}/{4}) \%

per annum

=11 \%

per annum
∴ Required amount

=₹[8000+({8000 × 6 × 11}/{100})]

=₹[8000+5280]=₹ 13280

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