Question

pleasegive me all with method​

Answer 1

➤ Given :-

Cost price of the bicycle :- ₹ 2000

Selling price of the bicycle :- ₹ 2500

➤ To Find :-

Gain percentage of the bicycle...........

➤ Formula required :-

${\large\tt \dashrightarrow \orange{\boxed{\tt \gray{\dfrac{Gain}{Cost \: price} \times 100}}}}$

➤ Solution :-

First, we should find the value of gain in the numerical format by subtracting the selling price and the cost price.............

Gain :-

${\tt \longrightarrow 2500 - 2000}$

${\tt \longrightarrow Rs \: \: 500}$

Now,

Gain percentage :-

${\tt \longrightarrow \dfrac{500}{2000} \times 100}$

${\tt \longrightarrow \dfrac{500}{\cancel{2000}} \times \cancel{100} = \dfrac{500}{20}}$

${\tt \longrightarrow \cancel\dfrac{500}{20} = \boxed{\tt 25 \bf\%}}$

$\Huge\therefore$ The gain percentage of the bicycle is 25 ${\bf\%}$.

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➤ Given :-

Principle :- ₹ 1000

Rate of interest :- 12%

Time :- 2 years

➤ To Find :-

Simple Interest to be paid at end of the time.........

➤ Formula required :-

${\large\tt \dashrightarrow \orange{\boxed{\tt \gray{\dfrac{P \times R \times T}{100}}}}}$

➤ Solution :-

Simple Interest :-

${\tt \longrightarrow \dfrac{1000 \times 12 \times 2}{100}}$

${\tt \longrightarrow \dfrac{\cancel{1000} \times 12 \times 2}{\cancel{100}} = \boxed{\tt 10 \times 12 \times 2}}$

${\tt \longrightarrow \tt 10 \times 24} = \boxed{\tt Rs \: \: 240}$

$\Huge\therefore$ The simple interest of the given sum is ₹ 240.

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$\dashrightarrow$ Some related formulas :-

Loss :- ${\boxed{\tt CP-SP}}$

Loss percentage :- ${\boxed{\tt\dfrac{Loss}{CP} \times 100}}$

Principle :- ${\boxed{\tt\dfrac{SI \times 100}{R \times T}}}$

Rate of interest :- ${\boxed{\tt\dfrac{SI \times 100}{P \times T}}}$

Time :- ${\boxed{\tt\dfrac{SI \times 100}{P \times R}}}$