Perimeter of the backwheel is 9 feet and front wheel is 7 feet at a certain distance. The front wheel gets 10 revolutions more than the back wheel. What is the distance?  Choose the correct choice from the following answers:
A) 305
B) 310
C) 315
D) 320
E) 325
If distance=d   Number of revolutions by back wheel=d/9 &amp; front wheel=d/7   (d/7)-(d/9)=10 ,2d=630 ,d=315   ANSWER:315
<result>C</result>
Perimeter of the backwheel is 9 feet and front wheel is 7 feet at a certain distance. The front wheel gets 10 revolutions more than the back wheel. What is the distance?