So if Michael is 2.5 times older than Julia, you would calculate 14 x 2.5 which would give you 35 which could be Michaels age when Julia is 14. Subtract 14 from 35 which then gives you the age difference between Julia and Michael, it would be 21 years. Now that Michael is 60, subtract 21 from 60 which will reveal Julia’s age. If Michael is 60, Julia will be 39.
If a car travels at constant speed of 40mph then it will have traveled 10miles in 15 mins (4x10=40miles). Hence, In 45 minutes the car will have reached 30miles