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Saturday, September 23 2017 @ 11:22 AM CDT
 Forum Index >  Test Paper Related >  Primary 6 Matters
 Maths Question
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By: sundarshoba (offline)  Friday, June 22 2012 @ 05:46 PM CDT (Read 761 times)  
sundarshoba

Please assist to work out the steps for the attached questions. Thks

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By: tanhuimin (offline)  Saturday, June 23 2012 @ 07:07 AM CDT  
tanhuimin

a) (886 - 340) / 6 = 91
speed of machine A is 91 copies per hour

b) 2750 - ( 75 x 16 + 886 ) = 664
after the 1st 16hrs or work, still required to print another 664 copies.
Time take for these 664 copies, 664 / (91 + 75) = 4
Machine B has worked for 20 hours.

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