Two numbers differ by 30. if 15 is added to the smaller, the result exceeds half the larger number by 7 1/2. what are the numbers

Will mark ! (10 points also! ) if x varies inversely with y and x =6 when y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15