Solve.
-The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 315 seconds are required to make a 5 -by- 7 enlargement, find the time required for a 6 -by- 10 enlargement.
A) 480 sec
B) 660 sec
C) 600 sec
D) 540 sec
Correct Answer:
Verified
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