Quantitative Aptitude - Arithmetic Ability Questions

In an exam, the avarage marks obtained by John in English, Maths, Hindi and Drawing were 50. His average marks in Maths, Science, Social Studies and Craft were 70. If the average marks in all seven subjects is 58, his score in maths was

Arjun and Anurag complete a job in 6 days and 7 days respectively. They worked together and earned a total of Rs. 780. Find Arjun's share in this amount in Rs. ?

Five men or ten women can complete a job in 20 days. In how many days can 3 men and 4 women complete it?

Calculate the distance (in cm) of the chord from the centre of the circle, if the chord of length 48 cm is drawn in the circle of radius 25 cm.

Which of the following is correct?

4*(-­0.1(5.5 + 8.5)) of 0.5 = ?

Twenty one times of a positive number is less than its square by 100. The value of the positive number is

Find the total surface area (in cm2 ) of a hemisphere of diameter 42 cm.