Question

(i) Find the simple interest of ₹300 in 3 years at 3% rate of interest per annum.

(ii) Find the simple interest and amount of the sum of ₹800 in 3 years at 5% rate of interest per annum.

(I will mark you as well list if you answered those two questions correctly)​

Answer 1

$\qquad \qquad \; \large {\underline{\underline{\pmb{\pink{\sf{ Question \; 1 }}}}}}$

Given :

• Principal = Rs.300
• Rate = 3 %
• Time = 3 years

To Find :

• Simple Interest = ?

Solution :

$\dag$ Formula Used :

• ${\underline{\boxed{\pmb{\sf{ S.I = \dfrac{P \times R \times T }{100} }}}}}$

Where :

• ➳ S.I = Simple Interest
• ➳ P = Principal
• ➳ R = Rate
• ➳ T = Time

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$\dag$ Calculating the Interest :

${\longmapsto{\qquad{\sf{ S.I = \dfrac{P \times R \times T }{100} }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ S.I = \dfrac{300 \times 3 \times 3}{100} }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ S.I = \dfrac{900 \times 3}{100} }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ S.I = \dfrac{2700}{100} }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ S.I = \cancel\dfrac{2700}{100} }}}} \\ \\ \\ \ {\qquad \; \; {\therefore \; {\underline{\boxed{\red{\pmb{\frak{ Simple \; Interst = ₹ \; 27 }}}}}}}}$

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❛❛ Simple Interest on this sum of money is ₹ 27 .❜❜

$\\ {\underline{\rule{300pt}{9pt}}}$

$\qquad \qquad \; \large {\underline{\underline{\pmb{\pink{\sf{ Question \; 2 }}}}}}$

Given :

• Principal = Rs.800
• Rate = 5 %
• Time = 3 years

To Find :

• Simple Interest = ?

Solution :

$\dag$ Formula Used :

• ${\underline{\boxed{\pmb{\sf{ S.I = \dfrac{P \times R \times T }{100} }}}}}$

Where :

• ➳ S.I = Simple Interest
• ➳ P = Principal
• ➳ R = Rate
• ➳ T = Time

$\\ \qquad{\rule{150pt}{1pt}}$

$\dag$ Calculating the Interest :

${\longmapsto{\qquad{\sf{ S.I = \dfrac{P \times R \times T }{100} }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ S.I = \dfrac{800 \times 5 \times 3}{100} }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ S.I = \dfrac{4000 \times 3}{100} }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ S.I = \dfrac{12000}{100} }}}} \\ \\ \\ \ {\longmapsto{\qquad{\sf{ S.I = \cancel\dfrac{12000}{100} }}}} \\ \\ \\ \ {\qquad \; \; {\therefore \; {\underline{\boxed{\purple{\pmb{\frak{ Simple \; Interst = ₹ \; 120 }}}}}}}}$

$\\ \qquad{\rule{150pt}{1pt}}$

❛❛ Simple Interest on this sum of money is ₹ 120 . ❜❜

$\\ {\underline{\rule{300pt}{9pt}}}$

Answer 2

Answer:

p=300

t=3yers

r=3%

according to formula

300×3×3/100

= 27 is a simple interest