Quantitative Aptitude - Arithmetic Ability Questions

The areas of two similar triangles ΔABC and ΔPQR are 121 sq cms and 64 sq cms respectively. If PQ = 12 cm, what is the length (in cm) of AB?

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?

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

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

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.

O is the orthocentre of∆ABC, and if ∠BOC = 110° then ∠BAC will be

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

If 11+11+11+1x = 58, then what is the value of x?