Category Archives: Mathematics

Time and Work

1.A and B can do a work in 12 days, B and C in 15 days and C and A in 20 days. If A, B and C work together, they will complete the work in : A.5 days      B. 6 days       C. 10 days      D. 15 days      [SSC-99,03,06,11,13] 2.A particular job can… Read More »

Time & Distance

1.A 180 meter long train crosses a man standing on the platform in 6 second. What is the speed of the train? [BSRB Calcutta-95] A. 90 km/hour B. 108 Km / hour C. 120 km / hour D. 88 km / hour. 2. A train takes 18 seconds to pass through a station,162 m. long… Read More »