Question

Answer these 2 questions and be brainst

If principal is RS 8000 , Amount is RS9680 ,then Compound interest is RS___________
(1 Point)

a) 1000

b) 1580

c) 1680

d) 680

2 questions

(21m^2) ÷ (7m) is _____________
(1 Point)

a) 3

b) 3m

c) 28m

d) 14m​

Answer 1

Answer :-

i)

Given :-

• Principal = Rs. 8000
• Amount = Rs. 9680

To Find :-

• Compound interest

Solution :-

We know that,

→ Compound interest = Amount - Principal

Substituting the value in formula :-

→ Compound interest = 9680 - 8000

→ Compound interest = 1680

Compound interest = Rs. 1680

ii)

$\implies\sf \dfrac{21m^2}{7m}$

$\implies\sf \dfrac{21}{7} \times \dfrac{m^2}{m}$

$\implies\sf 3 \times m^{2-1}$

$\implies\sf 3 \times m$

$\implies\sf 3m$

$\implies\boxed{\sf \dfrac{21m^2}{7m} = 3m}$