Quantitative Aptitude - Arithmetic Ability Questions

Two donkeys are standing 400 meters apart. First donkey can run at a speed of 3 m/sec and the second can run at 2 m/sec. If two donkeys run towards each other after how much time (in sec) will they bump into each other?

1/3 part of a certain journey is covered with the speed of 25 km/hr, 1/2 part of the journey is covered with the speed of 45 km/hr and the remaining part covered with the speed of 37.5 km/hr. What is the average speed (in km/hr) for the whole journey?

What is the average of all numbers between 8 and 74 which are divisible by 7?

If the volume of a cylinder is 3850 cubic cm and height is 25 cm, what is its radius? (Take π = 22/7)

In a Rhombus ABCD, measure of angle CAB is 30°, what is the measure of angle ABC?

In ∆ ABC, the height CD intersects AB at D. The midpoints of AB and BC are P and Q respectively. If AD = 8 cm and CD = 6 cm, then the length of PQ is?

The value of tan80° tan10° + sin270° + sin20∘

The sum of three consecutive natural numbers each divisible by 5, is 225. The largest among them is