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Two men A and B can complete a work in 18 and 12 hours respectively.Both the men start working together at 7 a.m. and complete the work at 3 p.m. Find the minimum possible time for which either of the two men did not work during that period?

An item is sold for Rs 12,000 cash or Rs 7,000 down payment followed by 8 monthly installments of Rs 630. Find the rate % p.a.

The list price of an article is Rs.2400.If the discount increases from 14% to 19% then profit decreases from 17.5% to 10%.Find the cp of the article?

Time:5 sec

Anil works for 12 days and is able to complete 40% of the work. Then he is joined by Ajay and together they complete the work in another 12 days.How much more efficient is Anil than Ajay?

Most of the students would be able to solve it using basic Time Work Concept.However I want you guys to solve it logically rather than mathematically.It saves time!

There are 3 points L,M and N.M lies between L and N and it is exactly in the middle.A man travels from L to M and comes back taking 5 hrs and 15 mins. Then it goes from L to N in 7hrs.Find time taken by the man to return to L?

Time: 5 sec

Average marks of 30 boys is 30. New group of x boys whose avg marks is y are added to the group .Sum of x and y is 40.what can be the max average score of the new group?

Try solving without pen paper!

A man runs the first lap of race at 30 km/hr.At what speed he must run the second lap so that his average speed for 2 laps is 60 km/hr?

Time: 2 sec

Guys remember that in a competitive exam, getting an answer to a question is not as important as the approach you use to solve it....

2 cars start moving from point A with a speed of 24 km/h at interval of 20 min in same direction. A man is travelling towards the point A from opp direction and he meets the 2 cars after a gap of 16 minutes.Find the man's speed.

Time: 5 sec

Arun takes thrice as long as Namit and Aman together to complete a job. Namit takes 4 times as long as Arun and Aman together to complete a task . All 3 of them working together can do the work in 24 days, then find how long will A alone take to complete the work?

Very easy!