If seven spiders create seven webs in seven days, how many days would it take one spider to make one web?
A. 1
B. 7/2
C. 7
D. 49
Answer:C
If seven spiders create seven webs in seven days, how many days would it take one spider to make one web?
A. 1 B. 7/2 C. 7 D. 49
Explanation: Let x be the needed number of days.More days, fewer spiders (Indirect Proportion),Fewer webs, fewer days (Direct Proportion),1 x 7 x x = 7 x 1 x 7 Spiders 1 : 7 :: 7 : x Webs 7 : 1 1 x 7 x x = 7 x 1 x 7,x equals 7.