Quantitative Aptitude - Arithmetic Ability Questions

If 3A = 7B = 13C, then A : B : C is equal to

The third proportional of two numbers 7 and 21 is

Kishan cycled a distance of 120 km at a certain speed. If he cycled 2 km slower every hour, he would have taken 3 more hours to reach his destination. What is the speed in kmph at which Kishan actually cycled?

Five women can do a work in 36 days. If the ratio between the capacity of a man and a woman is 3:1, then find how many days it will take 5 men to complete the same woek?

If ABCDEF is a regular hexagon, then what is the value (in degrees) of ∠ADB?

One of the internal angle of a rhombus is 60° and length of its shorter diagonal is 8 cm. What is the area of the rhombus?

If x + 1x = c + 1c, then the value of x =

A vendor buys bananas at 12 for Rs 50 and sells at 5 for Rs 40. What will be the gain (in %)?