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Mathematics, 22.09.2019 05:10 anna8352

If it takes john 10 hours to paint the fence, how long will it take john and his 2 friends to do the job if they work at the same rate ?
a)1 1\3 hours
b)1 2\3 hours
c)2 2\3 hours
d)3 1 \3 hours

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