A, B, C and D purchase a gift worth Rs. 60. A pays $${1\over2} $$ of what others are paying. B pays $${1\over 3} $$ of  what others are paying and C  pays $${1\over 4} $$ of what others are  paying. What is the amount paid by D?

A scientific calculator is available at universal shoppe in hazratganj at 20 % discount and the same is available at only 15 % discount of universal shoppe Bhootnath market. Mr. Agrawal has just sufficient amount of 800 to purchase it at universal shoppe hazratganz. What is the amount that Mr. Agrawal has less than the required to purchase it at universal. shoppe Bhootnath ? 

On dividing a certain number by 342 we get 47 as remainder. If the same number is divided by 18, what will be the remainder?

Direction: What should come in place of the question mark (?) in the following number series?
0.5, 2, 9, 35, 104, ?

A shop - keeper sells a badminton racket whose marked price is ₹ 30, at a discount of 15 % and gives a shuttle cock costing ₹ 1.50 free with each racket. Even then he makes a profit of 20 %. His cost price, per racket is 

The ratio between the present ages of P and Q is 3:4 respectively. 4 years hence Q will be 5 year older than P. What is P’s present age?

The total surface area of a cube is 864 square cm. What is his volume?

What are the roots of the equation log₁₀(x²-6x+45) =2?