Question

At what rate percent per annum will rupees 350

Amount to rupees 455 in six years?​

Answer 1

Answer:

rate of interest = 5%

Step-by-step explanation:

p= 350

a= 455

Si= a-p=455-350=105

t= 6 years

$r=\frac{si\times100}{pt}\\=\frac{105\times100}{350\times6}\\= 5$

rate of interest = 5%

Answer 2

Qᴜᴇsᴛɪᴏɴ :

At what rate of simple interest will ₹ 350 amount to ₹ 455 in 6 years ?

Gɪᴠᴇɴ :

• Principle = ₹ 350
• Amount = ₹ 455
• Time = 6 years

Tᴏ ғɪɴᴅ :

Rate of Interest

Sᴏʟᴜᴛɪᴏɴ :

Here...

•Principle = ₹ 350

•Amount = ₹ 455

•Time = 6 years

Now :-

$\bigstar \fbox{ S.I = Amount - Principle }$

⇒ S.I = ₹ 455 - ₹ 350 = ₹ 105

⇒ S.I = ₹ 195

Using Formula,

$\implies \sf{Simple \: interest} = \: \frac{ \text{Principal }\times \text{ Rate} \times \text{Time}}{100}$

We get

$\sf105 = \dfrac{350 \times R \times 6}{100}$

$\sf \: r = \dfrac{105 \times 100}{350 \times 6} =\bold{5\%p.a.}$

∴ The rate of interest is 5 % p.a.