Answer:
Step-by-step explanation:
Given:
Work done by Sita in 1 hour = 1/9
Work done by Mita in 1 hour = 1/6
Work done by Rita in 1 hour = 1/12
Work done by Sita, Mita and Rita together in 1 hour = 1/9 + 1/6 + 1/12
= (4+6+3)/36 {by taking LCM for 9, 6 and 12 which is 36}
= 13/36
Therefore,
Time taken by all three together to complete the work = 1/(13/36) = 36/13 hours.
Given that,
Sita can finish typing a 100 page document = 9 hours,
Mita can finish typing a 100 page document = 6 hours , and
Rita can finish typing a 100 page document = 12 hours.
Mean of their proportion
9 : 6 = 6 : 12
6 × 6 = 9 × 12
36 = 108
1 = 3
3 hours will they to type a 100 page document they work together.
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Answers & Comments
Answer:
Step-by-step explanation:
Given:
Work done by Sita in 1 hour = 1/9
Work done by Mita in 1 hour = 1/6
Work done by Rita in 1 hour = 1/12
Work done by Sita, Mita and Rita together in 1 hour = 1/9 + 1/6 + 1/12
= (4+6+3)/36 {by taking LCM for 9, 6 and 12 which is 36}
= 13/36
Therefore,
Time taken by all three together to complete the work = 1/(13/36) = 36/13 hours.
Answer:
Step-by-step explanation:
Given that,
Sita can finish typing a 100 page document = 9 hours,
Mita can finish typing a 100 page document = 6 hours , and
Rita can finish typing a 100 page document = 12 hours.
Mean of their proportion
9 : 6 = 6 : 12
6 × 6 = 9 × 12
36 = 108
1 = 3
3 hours will they to type a 100 page document they work together.