Candy throws 4 pebbles into the lake.  Lance throws in 3 times as many pebbles as Candy. How many more pebbles did Lance throw compared to Candy?
Lance throws this many pebbles into the lake 4 x 3 = <<4*3=12>>12.
He throws this many more pebbles than Candy 12 - 4 = <<12-4=8>>8 pebbles.
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