EPIC FAIL on Standardized Test Makers

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It was DOUBLED which means it increased by itself twice(2).

it increased the 5 in the 8 by 2,which would end up increasing the product by 4.

Ok Ill explain this simpilar...The dimensions are 5x8....If you double the dimensions*5x8* you would get 10x16,which is an area of 160.if 5x8=40,160/40*the old area*=4.The area was increased by 4 times,not by 2.if it was increased by 2 it would be 80,not 160.