Typist a can type a sheet in 6 minutes, typist b in 7 minutes and typist c in 9 minutes. The average number of sheets typed per hour per typist for all three typists is
Answers
Answer:
8.41
Step-by-step explanation:
typist a can type a sheet in 6 minutes
so in 1 hour a can type 60/6 = 10 sheets
typist b can type a sheet in 7 minutes
so in 1 hour b can type 60/7 = 8.57 sheets
typist c can type a sheet in 6 minutes
so in 1 hour c can type 60/9 = 6.66 sheets
so the average number of sheets typed per hour
=(10 + 8.57+6.66)/3
=25.23/3
=8.41
Answer:
Typist a can type a sheet in 6 minutes, typist b in 7 minutes and typist c in 9 minutes. The average number of sheets typed per hour per typist for all three typists is = 8.41 Sheets
Step-by-step explanation:
1hr = 60 mins
Typist A - takes 6 minutes to type 1 sheet
in 60 minutes he will type = (1/6) * 60 = 10 Sheets
Typist B - takes 7 minutes to type 1 sheet
in 60 minutes he will type = (1/7) * 60 = 60/7 Sheets
Typist C - takes 9 minutes to type 1 sheet
in 60 minutes he will type = (1/9) * 60 = 20/3 Sheets
Total number of sheets typed in 1 hr by three typist = 10 + 60/7 + 20/3
= (210 + 180 + 140)/21
= 530/21
Average number of sheets typed in 1 hr per typist = (530/21)/3
= 530/63
= 8.41 Sheets