Imagine that $1 = €1.40. Sam spends €50 and has €34 left. How many dollars did he start with?
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SAM SPENT=â50
SAM LEFT WITH=â34
SAM START WITH=â(50+34)
=â84
$1=â1.40
â1=$1/1.40
â84=84/1.40
=84×10/14
=6×10
=â60
SAM LEFT WITH=â34
SAM START WITH=â(50+34)
=â84
$1=â1.40
â1=$1/1.40
â84=84/1.40
=84×10/14
=6×10
=â60
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