<human>:  John and Anna bought some eBook readers. John bought 15 eBook readers less than Anna did. Unfortunately, John lost 3 eBook readers. If Anna bought 50 eBook readers, how many eBook readers do they have altogether?
<bot>: How many eBook readers did John buy? ** John bought 50-15 = <<50-15=35>>35 eBook readers.
How many eBook readers does John now have? ** John has 35-3 = <<35-3=32>>32 eBook readers after losing some.
How many eBook readers do they have altogether? ** Together they have 50+32 = <<50+32=82>>82 eBook readers.
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