Quantitative Aptitude - Arithmetic Ability Questions

If 14/3 + (1/2)(x - 7/3) = -2x/3, then the value of x is?

If a1-2a+b1-2b+c1-2c = 12, then 11-2a+11-2b+11-2c value is

The mean deviation of the data 3, 10, 10, 4, 7, 10, 5 is :

A sum of 2,000, invested at the rate of 8.5% simple interest per annum for 6years will yield an interest of

A boy running at 10/9 th of his actual speed covers 39 km in 2 hours 20 minutes and 24 seconds. Find the actual speed of the boy (approx.)

Due to inclement weather, an air plane reduced its speed by 300 Km/ hr, and reached the destination of 1200 km late by 2hrs. Then the schedule duration of the flight was.

10 people can build a wall in 12 days. Six people, each only half as efficient as those in the first group, will be able to complete 3/5 of such a wall in

The mean of marks secured by 50 students in division A of class X is 61, 25 students of division B is 57 and that of 50 students of division C is 55. What will be the mean of marks of the students of three divisions of Class X?