Operated Pencil

Operated Pencil

NEW LOCKERMATE MAGNETIC Battery Operated Pencil Sharpener w/STORAGE CUP $12.69

X-acto Compact Desktop Battery-Operated Pencil Sharpener – EPI16750 – 2 Item Bun $18.80

Panasonic Battery Operated Portable Electric Pencil Sharpener KP-4A $17.00

Stanley-Bostitch Quick Action Battery-Operated Pencil Sharpener – BOS02697 – 2 I $35.78

X-Acto Buzz Battery-Operated Pencil Sharpener – EPI16758 – 3 Item Bundle $20.96

A & W Battery Operated Pencil SHARPENER W/BUILT IN SCRAP CATCHER #41109 RED NEW $5.99

AandW Products Battery Operated Pencil Sharpener with Scrap Catcher, Assorted Co $16.24

Omnitech Battery-Operated Pencil Sharpener Brand New Sealed Make An Offer?? $12.95

Westcott Ipoint Evolution Battery Operated Pencil Sharpener, Black $20.00

NEW X-ACTO BATTERY OPERATED PENCIL SHARPENER, DESK-TOP!! $14.99

Designer Series Panasonic KP-4A Battery Operated Pencil Sharpener – Works Great! $72.95

Hunt Helical Battery Operated Pencil Sharpener, Black $24.83

Hunt Compact Battery Operated Pencil Sharpener, Black $15.10

STAPLES BATTERY OPERATED PENCIL SHARPNER $2.50

Staples Battery Operated Portable Pencil Sharpener $10.00

Omnitech Battery operated pencil sharpener brand new $9.00

BRAND NEW Pencil Sharpener Battery Operated $6.99

X-Acto 16701 Helical Battery Operated Pencil Sharpener, Black, 1 Unit $21.05

Westcott iPoint Evolution Battery Operated Pencil Sharpener, Black $35.25

X-Acto 16701 Helical Battery Operated Pencil Sharpener, Black, 1 Unit $18.29

AandW Products Battery Operated Pencil Sharpener with Scrap Catcher, Assorted Co $13.49

BATTERY OPERATED Pencil Sharpeners 3 count Brand New $37.99

X-ACTO Battery Operated Helical Cutter Desk Pencil Sharpener Classroom ELM 16701 $19.99

Vintage Sunbeam Battery Operated Pencil Sharpener Mr. Sharpy Old School NICE $9.00

Battery Operated Letter Opener, Pencil Sharpener, Tape Dispenser, Pen Holder NIB $8.99

Small Black Plastic Battery Operated Pencil Sharpener $12.00

NIB Pink Locker Planet Battery Operated Pencil Sharpener Storage Cup Magnetic $7.99

X-acto – 16701 – Helical Desktop Battery-Operated Pencil Sharpener – Electric Pe $20.48

X-acto – 16774 – Battery Operated Personal Pencil Sharpener – 2 Item Bundle – El $21.44

Elmers EPI 16701 (6) Helical Desktop Battery-Operated Pencil Sharpener Black $111.99

X-Acto The Mini Standup (Sculptura Series) Battery-Operated Pencil Sharpener, Bl $11.99

Radio Shack battery (4 AA batteries not included) operated pencil sharpener $8.92

Westcott iPoint Titanium Bonded Battery Operated Pencil Sharpener New ~READ~ $9.99

Brand New Battery Operated Pencil Sharpener Blue Body $15.00

STAPLES 935215: Battery-Operated Pencil Sharpener $15.49

Elmer’s Helical Battery Operated Pencil Sharpener, Black $22.85

A & W BATTERY OPERATED PENCIL SHARPENER W/BUILT IN SCRAP CATCHER #41109 PURPLE $5.99

A & W BATTERY OPERATED PENCIL SHARPENER W/BUILT IN SCRAP CATCHER #41109 GREEN $5.99

Work Rate Question – Best Answer will be chosen:)?

Machine A produces pencils at a constant rate of 9,000 pencils per hour, and machine B produces pencils at a constant rate of 7,000 pencils per hour. If the two machines together must produce 100,000 pencils and if each machine can operate for at most 8 hours, what is the least amount of time, in hours, that machine B must operate?

The answer is 4 hours. Please explain the necessary steps and logic to obtain this answer! I will give best answer to the clearest explanation! Thanks=)

machine a = 9,000/hr
machine b = 7,000/hr
minimise machine b so total = 100,000 units.
run machine a for 8 hours = 8 x 9,000 = 72,000 units.
amount required to achieve 100,000 units = 100,000 – 72,000 = 28,000 units.
28,000 at 7,000 units per hour = 28,000/7,000 = 4.
Hence 4 hours is the answer.

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