Quantitative Aptitude - Arithmetic Ability Questions

A Rs 100 shirt is offered at 10% discount and a Rs 300 pair of trousers at 20% discount. If Pritam bought 1 shirt and 3 pairs of trousers, what is the effective discount (in %) he got?

If a2+b2+c2=83and a+b+c=15 then the value of ab+bc+ca is

If a2sec2x - b2tan2x = c2 then the value of sec2x + tan2x is equal to (assume b2 ≠ a2 )

A dishonest milkman buys milk at Rs 24 per litre and adds 1/3 of water to it and sells the mixture at Rs 32 per litre. What is his gain?

If compound interest received on a certain amount in the 3rd year is Rs. 12,100, what will be the compound interest (in Rs) for the 4th year on the same amount if rate of interest is 9%?

If x3+ 2x2– 5x + k is divisible by x + 1, then what is the value of k?

The value of cosec260 + sec260 cot260 + tan230 will be

X and Y are the mid points of sides AB and AC of a triangle ABC. If BC+XY=12 units, then BC-­XY is