Banking (IBPS / SBI PO) · Quantitative Aptitude

Arithmetic: Time, Work and Speed

11 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 11 questions

  1. A train 180 m long runs at 108 km/h. How many seconds does it take to cross a pole?
  2. A can complete a job in 8 days and B in 8 days. Working together, in how many days will they complete it?
  3. Two trains 200 m and 100 m long run on parallel tracks in opposite directions at 72 km/h and 36 km/h. How long do they take to cross each other?
  4. A boat's speed in still water is 15 km/h and the stream flows at 5 km/h. How long does it take to go 24 km downstream and return?
  5. A person covers 150 km at 50 km/h and returns the same 150 km at 75 km/h. What is the average speed for the whole journey?
  6. A boat's speed in still water is 12 km/h and the stream flows at 3 km/h. How long does it take to go 48 km downstream and return?
  7. A boat's speed in still water is 18 km/h and the stream flows at 6 km/h. How long does it take to go 24 km downstream and return?
  8. Two trains 100 m and 150 m long run on parallel tracks in opposite directions at 54 km/h and 36 km/h. How long do they take to cross each other?
  9. A can do a work in 15 days and B in 10 days. They work together for 3 days, then A leaves. In how many more days does B finish the remaining work?
  10. A can do a work in 30 days and B in 15 days. They work together for 4 days, then A leaves. In how many more days does B finish the remaining work?
  11. A can do a work in 12 days and B in 6 days. They work together for 2 days, then A leaves. In how many more days does B finish the remaining work?

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