Quantitative Aptitude - Arithmetic Ability Questions

6.651 -­ (148.6 ­- x ) -­ 57.22 = 6.098. Find x.

If A = 400 and B = 600, then A is how much percentage less than B?

A boat moves down stream at the rate of 8km/hr. and upstream at 4Km/hr. The speed of the boat in still waters is:

What is the value of (2/√3 +tan45° ) ?

Mahanath works 2 times as fast as Sahay. If Sahay can complete a job alone in 21 days, then in how many days can they together finish the job?

Asif is twice as good as workman as Bashir and together they finish a piece of work in 30 days. In how many days will Asif alone finish the work?

A vendor buys 6 bananas for Rs 25 and sells them at 3 for Rs 20. What is his profit percentage?

If 13A = 11B = 8C, find A : B : C