Question
Download Solution PDFRam can copy 60 pages in 15 hours. If Ram and Riya together can copy 180 pages in 30 hours, then in how many hours can Riya copy 20 pages?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
Ram can copy 60 pages in 15 hours.
Ram and Riya together can copy 180 pages in 30 hours
Formula Used:
Efficiency = Work done/Time Taken
Calculation:
By using the above formula
The efficiency of Ram is = 60/15= 4pages/hr
The efficiency of Ram and Riya = 180/30 = 6 pages/hr
The efficiency of Riya = 6 - 4 = 2 pages/hr
The time taken by Riya to copy 20 pages will be
⇒ 20/2= 10 hr
∴ The Time taken by Riya is 10 hours.
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