Quantitative Aptitude - Arithmetic Ability Questions

Manjeet can do a work in 18 hours. If he is joined by Jaya who is 100% more efficient, in what time will they together finish the work?

Three numbers are in the ratio of 3:5:10 and their LCM is 630. Find their HCF.

Select the odd word/letters/number/number pair from the given alternatives.

What is the fourth proportional to 6, 24 and 83?

The areas of two similar triangles ΔABC and ΔPQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 1:4 and area of ΔADE is 6 sq cm, what is the ratio of area of ΔADE: area of quadrilateral BDEC?

The time for a train of length 110 metres running at the speed of 72 km/hr to cross a bridge of length 132 metres is

If (1 - cosA)/2 = x, then the value of x is