Question

7. The amount of Rs 5000 at the annual rate of 12% is Rs 8000: (a) Find the interest (I). (b) Find the time (T).​

Answer 1

Answer:

Amount = 8000

Principal = 5000

Rate = 12%

Time = ?

Simple Interest = ?

∴ S.I = Amount-Principal

S.I = 8000-5000

S.I = 3000

Now Time

$SI = \frac{p \times r \times t}{100}$

$3000 = \frac{8000 \times 12 \times t}{100}$

$3 = \frac{8 \times 12 \times t}{100 }$

$300 = 96 \times t$

$t = \frac{300}{96}$

$t = 3.125$