If 7 workers take 20 days to paint the wall, number of days for 1 person to paint the wall is

120

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140

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240

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170

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Solution

The correct option is B 140
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Q. 5 skilled workers can build a wall in 20 days;
8 semiskilled workers can build a wall in 25 days;10 unskilled workers can build a wall in 30 days. If a team has 2 skilled, 6 semiskilled and 5 unskilled workers, how long will it take to build the wall ?

The management of a college decides to paint the college auditorium and observes that 16 workers can paint it in 10 days. The number of workers needed to complete the work in 4 days is 36.

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If 7 workers take 20 days to paint the wall, number of days for 1 person to paint the wall is

The correct option is B 140_

The correct option is B 140
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