For the first one you put an x below 10. 10/x then you cross multiply with 2/7. 10 x 70 = 70. Then you divide 70 by 2. You get 35, then you subtract 10 to get 25.
Second one: you multiply 7.25 by 10 to get 72.50. You subtract 72.50 from 105.50, you get 33. Finally you divide 33 by 5.50 to get 6. The answer is 6 friends purchased ride passes.