An evening movie is $10 and the food combo would be $10 so 10 + 10 = $<<10+10=20>>20
If he goes to an earlier movie, it's 20% off the normal ticket price of $10 so 10 * .20 = $<<10*.20=2>>2
If he goes to an earlier movie, it's 50% off the normal food price of $10 so 10 * .50 = $<<10*.50=5>>5
If he saves $2 for the ticket and $5 on food, then 2+5 = $<<2+5=7>>7 saved
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