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Start the planTwo dogs at opposite ends of a field of 630 feet run towards each other along a straight path and at a constant rate. If the first dog runs at 12 feet per second and the second dog runs at 23 feet per second, then how long does it take the two dogs to meet?
A. 10 seconds
B. 12 seconds
C. 18 seconds
D. 21 seconds
E. 23 seconds
Answer: C
Source: EMPOWERgmat
A. 10 seconds
B. 12 seconds
C. 18 seconds
D. 21 seconds
E. 23 seconds
Answer: C
Source: EMPOWERgmat
