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 

Alex sold his goods after announcing two successive discounts of 30% each. The effective discount altogether is-

The cost of 6 dozen apples and 8 dozen bananas is ₹ 1400. what will be the cost of 15 dozen apples and 20 dozen bananas?

The ratio of HCF and LCM of two numbers a and b is 1:30 and the difference between the HCF and LCM is 493. Find the possible number of pairs of a and b.

Which of the following has the fractions in descending order?

If tan (11 θ)=cot (7θ), then what is the value of sin²(6 θ) + Sec² (9 θ) + cosec²(12 θ)?

If 3 sin x + 5cosx = 5 then what is the value of (3cosx - 5sinx)

Directions : What will come in the place of the question mark (?) in the following number series?

100 100   50  150  37.5 ?