जॉइन Examsbookउत्तर : 3. "7 hrs 30 min"
What is the time required to punch 1500 cards of 45 column each at the rate of 9,000 punches per hour ?5
प्र: What is the time required to punch 1500 cards of 45 column each at the rate of 9,000 punches per hour ?
- 18 hrsfalse
- 27 hrs 15 minfalse
- 37 hrs 30 mintrue
- 48 hrs 20 minfalse
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उत्तर : 3. "7 hrs 30 min"
व्याख्या :
Answer: C) 7 hrs 30 min Explanation: Total number of cards = 1500total columns = 45so, total punches=1500 x 45 = 67500for 1 hour if we make 9000 punches, we require 67500/9000 = 7.5so 7hours:30mins.