<human>:  Larry and Barry want to pick apples out of the tree, but neither is tall enough to reach the apples. Barry can reach apples that are 5 feet high. Larry is 5 feet tall, but his shoulder height is 20% less than his full height. If Barry stands on Larry's shoulders, how high can they reach?
<bot>: How tall is Larry's shoulder? ** Larry's shoulder height is 20% less than 5 feet, or 0.2*5 =<<20*.01*5=1>>1 foot less than 5 feet.
How tall is Larry's shoulder? ** One foot less than 5 feet is 5-1=<<5-1=4>>4 feet.
How high can they reach? ** If Barry stands on Larry's shoulders, they can reach 4+5=<<4+5=9>>9 feet.
#### 9