The marked price of a mixer is $₹ 2300$. A customer purchased it for $₹ 1955$. Find percentage of discount offered to the customer.

After offering discount of $10\%$ on marked price, a customer gets total discount of $₹ 17$. To find the cost price for the customer, fill in the following boxes with appropriate numbers and complete the activity. Suppose, marked price of the item $=₹ 100$

Therefore, for customer that item costs _____ $-$ _____ $=₹ 90$. Hence, when the discount is _____ then the selling price is _____ rupees.

Suppose when the discount is $₹$_____ the selling price is $₹ x$.

$.·.\frac{x}{\square }= \frac{\square }{\square } .·. x=\frac{\square \times \square }{\square }= \square$

$\therefore$ The customer will get the item for $₹ 153$.

John sold books worth rupees $₹4500$ for a publisher. For this he received $15\%$ commission. Complete the following activity to find the total commission John obtained.

Selling price of books $=$ _____                Rate of commission $=$ _____

Commission obtained $=\frac{\square }{\square }\times \square$      Commission $=$$\square$ rupees

Umatai purchased following items from a Khadi - Bhandar.
$3$ saris for $₹560$ each.

On the purchase, she received a rebate of $12\%$. If the total amount Umatai paid is $₹k$, then find the value of $k$. (upto one decimal)

On the purchase, she received a rebate of $12\%$. If the total amount Umatai paid is $₹k$, then find the value of $k$. (up to one decimal)