Quantitative Aptitude - Arithmetic Ability Questions

In a class consisting of boys and girls, there are 45 students. If three fifth of the students are boys, find the number of boys in the class.

The volume (in cu.cm.) of a right circular cylinder with radius 1 cm and height 2 cm is: pi = 22/7

If Reena sold 12 mobile phones for Rs. 1,88,160 which cost Rs. 14,056 per phone, what was the total profit made by her?

The ages of A and B differ by 16 years. If 6 years ago, the elder one was 3 times as old as the younger one, find the present age of the younger between A and B?

In ΔPQR, PQ = PR = 18 cm, AB and AC are parallel to lines PR and PQ respectively. If A is the mid-point of QR, then what is the perimeter (in cm) of quadrilateral ABPC?

In an isosceles triangle ABC, AB = AC and ∠A = 80°. The bisector of ∠B and ∠C meet at D. The ∠BDC is equal to

G and AD are respectively the centroid and median of the triangle ΔABC.The ratio AG:AD is

Two vessels of equal capacity contains juice and water in the ratio of 5 : 1 and 5 : 7 respectively. The mixture of both the vessels are mixed and transferred into a bigger vessel. What is the ratio of juice and water in the new mixture?