Question

8. Madhu can do a work in 10 days and Roni can do the same work in 16 days. With the help of Sohna, they do the work in 4days only in how many days can sohna do the work alone​

Answer 1

Answer:

8 days sohna can do

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Time taken by madhu to finish the work=8days

madhu's 1 day work=1/8

Time taken by Roni to finish the work=16days

Roni's 1 day work=1/16

Let's time taken by sohna to finish da work be 'x'days

then,sohna's 1day work=1/x

now,

Total work =1

=4(1/8+1/10+1/x)=1

=1/8+1/10+1/x=1/4

=1/x=1/4-(1/8+1/10)

=1/x=1/4-1/8-1/10

=1/x=7/80

=x=80/7

=x=11³/7

correct answer eleven three by seven.