4 mat-weavers can weave 4 mats in 4 days. At the same rate, how many mats would be woven by 8 mat-weavers in 8 days?	Choose one:
A) 4	B) 16	C) 8	D) 1	E) 0
Explanation :   Let the required number of mats be x   More mat-weavers, more mats (direct proportion)   More days, more mats (direct proportion)   ⇒ 4 × 4 × x = 8 × 8 × 4   ⇒ x = 2 × 2 × 4 = 16. Answer : Option 16
<result>B</result>
4 mat-weavers can weave 4 mats in 4 days. At the same rate, how many mats would be woven by 8 mat-weavers in 8 days?