human
Ursula bought five hot dogs at $1.50 each and three salads at $2.50 each. If she had two $10 bills, how much change did she get back?
assistant
How much do the hotdogs cost? ** Five hotdogs cost 5 x $1.50 = $<<5*1.5=7.50>>7.50.
How much do the salads cost? ** Three salads cost 3 x $2.50 = $<<3*2.5=7.50>>7.50.
How much did the hotdogs and salads cost in total? ** The total cost was $7.50 + $7.50 = $<<7.5+7.5=15>>15.
How much money did Ursula have? ** And, Ursula had 2 x $10 = $<<2*10=20>>20.
How much change did Ursula get back? ** Therefore, Ursula got a change of $20 - $15 = $<<20-15=5>>5.
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