Question

A sum of ₹600 amounts to ₹720 in 4 years. What will it amount to if the rate of interest is increased by 2%?
(a) ₹724
(b) ₹648
(c) ₹768
(d) ₹792
​

Answer 1

Answer:

(c) Rs 768

Step-by-step explanation:

Given:

P=Rs.600

SI=720−600=Rs.120

T=4 years.

Hence,R= SI×100/P×T= 120×100/600×4=5%

Now rate is increased by 2%.

So new rate=7%

SI= 600×4×7/100 =Rs.168

Hence new amount=168+600=Rs.768

Answer 2

$\green{ \boxed{ \boxed{₹768}}}$

$\red{ \mathfrak{ \large{Given}}}$

P=Rs.600

SI=720−600=Rs.120

T=4 years.

$\purple{ \mathfrak{ \underbrace{Solution}}}$

P=Rs.600

SI=720−600=Rs.120

T=4 years.

Hence,

$R= \frac{SI \times 100}{PT}= \frac{120 \times 100}{600 \times 4} =5\%$

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Now rate is increased by 2%.

So new rate=7%

$SI= \frac{600 \times 4 \times 7}{100} =Rs.168$

Hence new amount=168+600=Rs.768

Hence the answer is C) ₹768

❣Hope this helps you mate✌