Question

Compound interest on Rs. 350 in 3 years at4% per annum is​

Answer 1

GIVEN :–

• Principal amount(p)= 350 Rs.

• Time = 3 years

• Rate = 4 %

TO FIND :–

• Compound interest = ?

SOLUTION :–

• We know that –

$\\ \bf \implies Final\:\:Amount = p \left( 1 + \dfrac{r}{100} \right)^{t}$

• Put the values –

$\\ \bf \implies Amount = (350) \left( 1 + \dfrac{4}{100} \right)^{3}$

$\\ \bf \implies Amount = (350) \left( 1 +0.04 \right)^{3}$

$\\ \bf \implies Amount = (350) \left( 1.04 \right)^{3}$

$\\ \bf \implies Amount = (350) \left( 1.12 \right)$

$\\ \bf \implies \large{ \boxed{ \bf Amount = 392}}$

• We also know that –

$\\ \bf \implies \large Compound \: \: interest = Amount - Principal$

$\\ \bf \implies Compound \: \: interest = 392 -350$

$\\ \bf \implies \large{ \boxed{ \bf Compound \: \: interest =42}}$

• Hence , Compound interest is 42 Rs.

Answer 2

Answer:

⭐ Question ⭐

✏ Compound interest on Rs. 350 in 3 years at 4% per annum is ?

⭐ GIVEN ⭐

⭕Principal amount(p)= 350 Rs.

⭕Time = 3 years

⭕ Rate = 4 %

⭐ TO FIND ⭐

✏ Compound interest = ?

⭐ SOLUTION ⭐

✏ We know that –

✳ Final Amount = p(1+r/100)t✳

✍ Putting the value, we get

=> Amount = (350) (1+4/100)³

= (350) (1.04)³

= (350) (1.12)

➡ Amount = 392

✏ But we have to find compound interest,

✏ We also know that,

✳ Compound Interest = A - P

( where A = Amount, P = Principal)

=> Compound Interest = 392-350

= 42

✍ Compound Interest = Rs 42

➡ Hence, the compound interest = Rs 42 ✔

Step-by-step explanation:

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