Maths Quiz Test Of 2nd Jan

A, B, C, and D can do a piece of work in 20 days. A and B can do it together in 50 days,and C alone in 60 days ,find the time in which D alone can do it.

A person crosses a 600 m long street in 5 minutes.What is his speed in km per hour

Conjugate of (√2+1)

If a person walks at 14km/hr instead of 10km/hr,he would have walked 20 km more.The actual distance travelled by him is

A train can travel 50% faster than a car.Both start from point A at the same time and reach point B 75 kms away from A at the same time.On the way however ,the train lost 12.5 minutes while stopping at the station.The speed of car is

What is the value of (-1)½

In the beginning, Ram works at a rate such that he can finish a piece of work in 24 hrs, but he only works at this rate for 16 hrs. After that he works at a rate such that he can do the whole work in 18 hrsif Ram is to finish this work at a stretch how many hours will he take to finish this work

How many solution of (x-1) (x-1) = 0

A is thrice as good as workman as B and therefore is able to finish a job in 60 days less than B. Working together,they can do it in

A can do awork in 15 days and B in 20 days if they work on it together for 4 days, then the fraction of the work that is left is