Quantitative Aptitude - Arithmetic Ability Questions

The average height of 50 bats is 126 cm. Some bats of average height 120 cm are removed. If the new average height is 130 cm, then how many bats are remaining?

X and Y started a business by investing Rs 171000 and Rs 243000 respectively. If X’s share in the profit earned at the end of year is Rs 3800, then what will be the total profit (in Rs) earned by them together?

If the difference between the measures of the two smaller angles of a right angled triangle is 8°, then the smallest angle is

A and B can complete a task in 20 days, B and C can complete it in 30 days while C and A can do the same task together in 24 days. How many days will each of and C take to complete the task individually? 

In a mixture, water and milk are in the ratio of 3 : 5. In the second mixture, the ratio of water and milk is 9 : 11. If these two mixtures be mixed to form anew mixture in which water and milk are in ratio 5 : 7, then what is the ratio of these two mixtures in the new mixture?

If (x - 13)2 + (y - 4)2 = 0, then the value of y + xy - x ?

The vertical angle A of an isosceles triangle ΔABC is three times the angle B of it. The measure of the angle A is

When 2x + 2x = 3, then x3 + 1x + 2 value is