In the first round, Richard knocked down 70 + 15 = <<70+15=85>>85 pins.
In the second round, Patrick knocked down 85 x 2 = <<85*2=170>>170 pins.
In the second round, Richard knocked down 170 - 3 = <<170-3=167>>167 pins.
In total, Patrick knocked down 70 + 170 = <<70+170=240>>240 pins
In total, Richard knocked down 85 + 167 = <<85+167=252>>252 pins
Richard knocked down 252 - 240 = <<252-240=12>>12 pins more than Patrick.
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