Maths Questions Series #5

In a shop shirt are usually sold at 40% above the cost price. During a sale, the shopkeeper offers a discount of 10% off the usual selling price. If he man ages to sell 72 shirts for ₹ 13,608 then his cost price per shirt, ( in ₹) is 

A shopkeeper marks the price of an item keeping 20% profit. If he offers a discount of $$12{1\over 2}\%$$ on the marked price, his gain percent will be 

A certain number when divided by 175 leaves a remainder 132. When the same number is divided by 25, the remainder is:

If the number 247_679 is completely divisible by 9, then the smallest whole number in the place of the blank digit will be 

If a\b + b\a =1, then the value of a³+b³ will be 

If a+b=2c, find $${a\over a-c}+{c\over b-c}?$$

Find the distance travelled by a 40 cm diameter wheel to cover a distance of 176 meters? Using (π=22/7)