Quantitative Aptitude - Arithmetic Ability Questions

CAlculate : 72-6-45÷5-72-2×2÷2+2

If x2+5x+6 = 0, then the value of 2xx2-7x+6 is

The point P (a,b) is first reflected in origin to P1 and P1 is reflected in Y­axis to (4,­3). The co­-ordinates of point P are

When a number x is divided by a divisor it is seen that the divisor = 4 times the quotient = double the remainder. If the remainder is 80 then the value of x is

In a camp 180 students had ration for 20 days. How many students should leave the camp if the ration should last for 25 days?

Karteek is twice as good a foreman as Raju and together they finish a piece of work in 20 days. In how many days will Raju alone finish the work?

The average marks obtained by a group of 10 students were 20. One student left the group as a result of which the average of the remaining students rose to 21. But another student joined, as a result of which the average marks of the group dropped a bit and became 20.6. What were the average marks obtained by the student who left and the one who joined?

If 2+x+2-x2+x-2-x=2,then the value of X is