Math, asked by kumarvivek8438, 8 months ago

- A एक कार्य को 40 दिन में कर सकता है वह 5 दिन कार्य करता है और फिर B उसे 21
दिन में समाप्त कर देता है, तो A और B मिलकर उस कार्य को कितने दिनों में समाप्त
कर देंगे?​

Answers

Answered by vipinvip1233
6

Answer:

Step-by-step explanation:

A can do work in one day=1/40

in 5 days he can do= 5/40=1/8 work

work left= 1-1/8=7/8 work

now 7/8 work is completed by B in 21 days

so 1 work is completed by B in = 21*8/7=24 days

so A and B can work in 1 day= 1/40+1/24=8/120

total work can be competed by A and B in 120/8=15 days

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