Quantitative Aptitude - Arithmetic Ability Questions

G is the centroid of ΔABC. If AG = BC, then measure of ∠BGC is

What is the unit digit of the sum of first 111 whole numbers?

The ten's digit of a 2-digit number is greater than the units digit by 7. If we subtract 63 from the number, the new number obtained is a number formed by interchange of the digits. Find the number.

A runner starts running from a point at 6:00 am with a speed of 8 km/hr. Another racer starts from the same point at 8:30 am in the same direction with speed of 10 km/hr. At what time of the day (in p.m.) will the second racer will overtake the other runner?

If A, B and C can do a job working alone in 12, 18 and 36 days respectively. They all work together for 2 day, then B quits. How many days will A and C take to finish rest of the job?

If 2 pair of trouser is offered free on purchase of 3 pair of trousers priced Rs 900 each what is the effective discount on each pair of trouser?

A book is sold at three successive discounts of 20%, 20% and 10%. What is the net discount (in percentage)?

If the simple interest on Rs. 400 for 10 years is Rs. 280, then rate of interest per annum is