Christian just mowed 4 yards at $5.00 each so he made 4*5 = $<<4*5=20.00>>20.00
Sue just walked 6 dogs at $2.00 each so she made 6*2 = $<<6*2=12.00>>12.00
Christian had $5.00 saved and just made $20.00 while Sue had $7.00 saved and just made $12.00 so together they had 5+20+7+12 = $<<5+20+7+12=44>>44
The perfume cost $50.00 and they had $44.00 so they needed to make 50-44 = $<<50-44=6.00>>6.00 more dollars
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