Quantitative Aptitude - Arithmetic Ability Questions

If 192 pens cost is Rs.10, how many pens can be bought for Rs.5?

The numbers x, y, z are respectively proportional to 2, 3, 5 and the sum of x, y and z is 80. If the number z is given by the equation z = ax­-8, then a is

There are two numbers such that the first number is half of the second number. If their average is 57, then what is the first number?

Two pipes fill a tank when working individually in 25 and 40 hours, respectively while a third pipe can drain the filled tank in 16 hours. If all the three pipes are turned on at the same time when the tank is empty, how long will it take to fill the tank completely ?

If x2+1x2-6, then find the value of 2x(x-1)x3-x2-x+1

Raghavendra sells a machine for Rs 43 lakhs at a loss. Had he sold it for Rs 52 lakh, his gain would have been 5 times the former loss. Find the cost price of the machine.

Ramesh and Rahman can do a work in 20 and 25 days respectively. After doing collectively 10 days of work, they leave the work due to illness and Suresh completes rest of the work in 3 days. How many days Suresh alone can take to complete the whole work ?

Select the odd word/letters/number/number pair from the given alternatives.