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Whole Numbers (Pri-6)

/ Whole Numbers Admiralty Primary School / Homework (2018)
2. Sherry is given a commission of $180 for every tablet she sells. She is given an additional $75 for every 3 tablets sold. If she wants to earn more than $4 000, what is the least number of tablets she must sell? $180+$15-$5 $255
Ji

August 3, 2018
 
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Answer 1 Comments 1
Aug 3, 2018 06:35 AM
GUIDE: find total commissions for every 3 tablets sold, then break $4000 into parts of 3 tablets & remaining. Then solve.

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For every 3 tablets, she makes = ( 180 × 3 ) + 75 = $615---To make at least $4000 ->$4000 = ( 6 × $615 ) + ( $310 )So she must sell at least ->( 6 × 3 ) + 2  = 20 tablets---+ 2 because 2 × $180 = $360 ( > $310 )
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August 3, 2018
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