Quantitative Aptitude - Arithmetic Ability Questions

A does 80% of a work in 20 days. He then calls in B and they together finish the remaining work in 4 days. How long B alone would take to do the whole work?

11 January 2018 is a Thursday. On which day will 11 June 2019 fall?

Rajan sells a machine for Rs 52 lakhs at a loss. Had he sold it for Rs 62 lakh, his gain would have been 9 times the former loss. What is the cost price of the machine?

The lengths of the diagonals of a rhombus are 8 cm and 6 cm. The area of rhombus is:

What is the measure of central angle of the arc whose length is 11 cm and radius of the circle is 14 cm?

If a2+b2=80 and ab = 32, then calculate the value of a-b/a+b.

A dishonest milkman buys milk at Rs 30 per litre and adds 1/5 of water to it and sells the mixture at Rs 32 per litre. What will be his gain?

In what time will a train, 60 metres long, running at the rate of 36 km/hr pass a telegraph post?