A can finish a work in 15 days and B can finish it in 10 days. In how many days will they finish it working…

Time and Work · Quantitative Aptitude · Medium · Practice for SBI PO Prelims, SSC CGL Tier 1

A can finish a work in 15 days and B can finish it in 10 days. In how many days will they finish it working together?

  1. 12 days
  2. 8 days
  3. 2 days
  4. 6 days
Answer and solution

Correct answer: D) 6 days

Together per day: 1/15 + 1/10 = 1/6, so time = 6 days.

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