Question

on selling 17 balls at rs 720 there is a loss equal to the cost price of 5 balls the cost price of a ball is​

Answer 1

$\large{ \underline {\sf☆Given:-}}$

• Selling price of 17 balls = 720

• Loss equal to the price of 5 balls

$\large{ \underline {\sf☆Let:-}}$

• The cost price of a ball be Rs. x.

So ,

• The cp of 17 balls = 17x

• The cp of 5 balls = 5x

$\large{ \underline {\sf☆Solution:-}}$

$\sf \mapsto Loss = Cp-Sp$

$\sf \mapsto5x = 17x - 720$

$\sf \mapsto720 = 17x - 5x$

$\sf \mapsto720 = 12x$

$\sf \mapsto x = \large \frac{720}{12}$

$\sf \mapsto x = 60$

$\star{ \underline{ \boxed{ \sf \pink{The \: cost \: price \: of \: 1 \: ball = 60 rs}}}}$

Answer 2

$\huge{\mathtt{{\red{\boxed{\tt{\pink{\orange{Ans}\purple{wer}}}}}}}}$

Let the cost price of a ball is Rs. x

$\sf{\underline{\overline{\pink{Given\::-}}}}$

On selling 17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls.

$\sf{\underline{\overline{\red{Therefore \::-}}}}$

The equation is :

17x - 720 = 5x17x−720=5x

Solving the equation,

We get ,

$\begin{gathered}17 x - 720 = 5x \\\end{gathered}$

$\begin{gathered}17x - 5x = 720 \\\end{gathered}$

$\begin{gathered} 12x = 720 \\\end{gathered}$

$\begin{gathered} x = \frac{720}{12} \\\end{gathered}$

$\small{\underline {\rm {\color{red}{Cost \:price\: of \:ball \:is \:₹60}}}}$