Quantitative Aptitude - Arithmetic Ability Questions

If 192 pens cost is Rs.10, how many pens can be bought for Rs.5?

If (-1/2) * ( x - 5) + 3 = -5/2, then what is the value of x?

A boat covers 143 km upstream in 13 hours and the same distance downstream in 11 hours. What is the speed (in km/hr) of the boat in still water?

Find out the odd word/letters/number/number pair from the given alternatives.

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)?

The length of one side of a rhombus is 13 cm and one of the diagonals is 10 cm. What is the legth of the other diagonal?

A sphere of radius 5 cm is melted to form a cone with base of same radius. The height (in cm) of the cone is

ΔABC is similar to ΔPQR. Length of AB is 18 cm and length of the corresponding side PQ is 12 cm. If area of ΔABC is 324 sq cm, what is the area of ΔPQR?