Question

4. A can finish a work in 24 days, B in 9 days and C in 12 days. B start the work but are force
leave after 3 days. The time taken by A to complete the remaining work is:​

Answer 1

Answer:

options c is the correct...

Step-by-step explanation:

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Answer 2

Answer:

• In 3- days B and C can do= 3/9+3/12 =1/3+ 1/4= 7/12- part of the work.
• So the remaining (1–7/12)= 5/12 - part of the work is done by A.
• So A can complete the remaining work in = 5/12/(1/24)

=10 - days.

Step-by-step explanation:

• B will finish 1/9 of the work in 1 day. So in 3 days he will finish 1/9x3= 1/3

• C will finish 1/12 of the work in 1 day. So in 3 days he will finish 1/12 x 3 =1/4

• So B&C together would have completed 1/3 +1/4 =7/12 of the work. The remaining work is 1–7/12 = 5/12. which is to be completed by A alone.

• A can complete 1/24 of the work in 1 day. So to complete the remaining 5/12 of the work he will need 10 days.