Quantitative Aptitude - Arithmetic Ability Questions

X and Y are two alloys which are prepared by mixing zinc and aluminium in the ratio of 1 : 4 and 11 : 8 respectively. If equal quantities of alloys are melted to form a third alloy Z then what is the ratio of zinc and aluminium in alloy Z?

In an isosceles triangle ABC, AB = AC, XY || BC. If ∡A = 30, then ∡BXY =

A certain number of men agreed to do a work in 20 days. 5 men did not come for work. Others completed the work in 40 days. Find the number of men who had agreed to do the work originally.

The sum of digits of a two-digit number is 9. When the digits are reversed, the number decreases by 45. Find the changed number.

How much does one need to add to 2/3 to obtain 3/2?

A person borrows some money for 8 years at a rate of simple interest. If the ratio of principal and total interest is 5 : 8, then what is the rate ( inpercentage) of interest?

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

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