Question

4 draught men can complete a drawing in 10days after 6days 3extra draughtsman join the group how many days are now saved

Answer 1

after six days, no of days left = 4
therefore 4 men can complete drawing in 4 days,

let no of days be x if 3 men more join.
no of men = 4+3 = 7

ATQ
4*4 = 7x
16 = 7x
x = 16/7

no of days saved = 4 - 16/7
= 12/7

therefore 12/7 days were saved.

hope it helps.........
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Answer 2

Answer:

10*4=6*3

40/18=17.50