A shopkeeper bought 15 kg of rice at the rate of Rs.29 per kg and 25 kg of rice at the rate of Rs.20 per kg. He sold the mixture of both types of rice at the rate of Rs. 27 per kg. his profit in this transaction is___

The cost price of an article is ₹390. If it is to be sold at a profit of 3.12 %, how much would be its approximate selling price?

The HCF and LCM of two number are 20 and 120, respectively. If one number is 50 percent more than the other number, then which is the smaller number.

If $$ {(x+{1 \over{x}})^{2}}=3$$, the value of of $$  {x^{206}+x^{200}+x^{90}+x^{84}+x^{18}+x^{12}+x^{6}+1}$$

If a man were to sell his chair for Rs. 720, he would loss 25 %. To gain 25% he should sell it for__

If the radius and height of a cylinder increase by 20% and15% respectively. Then what is the % change in curved surface area? 

Direction : What should come in place of the question (?) in the following question.

(41) ² + (38)² × (0.15)²=?

By selling 66 metres cloth, a man loses S.P. of 11 metres. What is the loss percent?