Confusing GG translate return results for AGAIN
If ‘every year an about 20 motorcycle riders die on the UK's roads, with ten times as many again suffering serious injury,' then the injured people are about 200 or 220?

Question

Answer

My understanding is that there are 220 casualties  in total: 200 serious injuries and 20 fatalities.

'Again' means 'in addition to' the 20 already mentioned.

Answer

Yes - your interpretation is correct. 10x20=200