Question
Gabriel and Glen had 78 mini-helicopters. After Gabriel gave 17 mini-helicopters to Glen, Gabriel had twice as many mini-helicopters as Glen. How many mini-helicopters did Gabriel have at first?
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Gabriel and Glen had 78 mini-helicopters. After Gabriel gave 17 mini-helicopters to Glen, Gabriel had twice as many mini-helicopters as Glen. How many mini-helicopters did Gabriel have at first?