Quantitative Aptitude - Arithmetic Ability Questions

A work can be completed by 18 boys in 24 days. If 6 boys leave after working for 12 days, then how many days will be needed to complete the remaining work?

Vinay professes to lose 4% on sugar and uses a weight of 620 gm instead of 1 kg. What is the total profit percentage?

At a telephone exchange, three phones ring at intervals of 20 sec, 24 sec and 30 seconds. If they ring together at 11 : 25 a.m, when will they next ring together?

If secA + tanA = x, then find the value of x.

What is the simplest form of (1 + cosA)(cosecA ­ cotA)?

What is the perimeter of the sector whose central angle is 60° and radius of the circle is 21 cm?

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:5 and area of ΔABC is 98 cm sq, what is the area (in sq cm) of quadrilateral BDEC?

Which of the following triangle has the maximum area when inscribed inside the circle of same radius?