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Martha and Sally had lunch together on Tuesday. Sally paid $2 more than Martha. If the total bill was $5.64, how much did Sally pay for her lunch?
Let the amount Martha Paid be:x
Then the amount Sally paid is:x+2 ($2 more than Martha)
Add the two and you get:$5.64
The amount that Martha paid is:x=$1.82
The amount that Sally paid is:x+2=1.82+2=$3.82 (d)