Quantitative Aptitude - Arithmetic Ability Questions

One tap can fill a water tank in 50 mins and another tap can make the filled tank empty in 75 mins. If both the taps are open together, already half filled tank would be full in

(secA ­- tanA)/(cosecA + cotA) is equal to

If cot A = [sin B/(1 – cos B)], then what is the value of cot 2A?

Excluding stoppages, the speed of a train is 120 kmph and including stoppages, it is 50 kmph. For how many minutes does the train stop per hour?

A man bought 500 metres of electronic wire at 50 paise per metre. He sold 50% of it at a profit of 5%. At what percent should he sell the remainder so as to gain 10% on the whole transaction?

A villager buys a goat and a sheep together for Rs 14,250. He sold the sheep at a profit of 10% and the goat at a loss of 20%. If he sold both the animals at the same price , then what was the cost price of the cheaper animal?

If (x + 1/x) = 3, then x8+1x8 is equal to

A man spend 7.5% of his money and after spending 75% of the remaining, he had Rs. 370 left. How much money did he have