Question

1. Bharat bought 7 pens for Rs.25 each and sold them for Rs.170. Find his gain or loss percent.

Answer 1

Step-by-step explanation:

25×7=175

he sold for 170

CP more than sp means loss

So, loss=175-170 =5

l% = l/cp ×100

= 5/175 ×100

= 500/175

= 2.85

please mark me brainliest and follow me

Answer 2

GIVEN :-

• C.P of 1 pen is Rs. 25.
• S.P of 5 pens is Rs. 170.

TO FIND :-

• Gain or loss %.

SOLUTION :-

◉ C.P of 7 pens = Rs. 25 × 7 = Rs. 175.

$\to \bf \: Here, \: C.P \: > S.P \\ \\ \to \bf \: loss \: = C.P - S.P \\ \\ \to \bf \: loss \: = Rs. \: 5 \\ \\ \implies \boxed{ \bigg \{\red{ \bf \: loss\% = \dfrac{loss}{ C.P } \times 100\%} \bigg \}} \\ \\ \to \: \bf \: \bigg \{\dfrac{5}{175} \times 100\% \bigg \} \\ \\ \to \bf \bigg \{ \dfrac{100\%}{35} \bigg \} \\ \\ \to \boxed{ \pink{ \bf \dfrac{20}{7} \%}}$

$\underline{ \bf \: \therefore \: Hence \: the \: Loss\% \: is \: \frac{20}{7} \%}$

EXTRA INFORMATION :-

$\boxed{\begin{minipage}{6cm} \\ \bf{ \underline{Some Formulae}} \\ \\ \rightarrow \quad \sf P = \dfrac{100 \times S.I}{R \times T} \\ \\ \\ \rightarrow \quad T = \dfrac{100 \times S.I}{P \times R} \\ \\ \\ \rightarrow \quad R = \dfrac{100 \times S.I}{P \times T} \\ \\ \\ \rightarrow \quad A = P + S.I \\ \\ \\ \rightarrow \quad S.I = \dfrac{P \times R \times T}{100} \\ \end{minipage}}$