math
posted by lien on .
A clock is 4 minutes fast when the correct time is 10am,but it is losing 2 minutess every half hour.What time will it show when the correct time is 4pm.the same day?would u please show me how to work it out,thanks

you can either construct your formula
OR go step by step until you reach 4pm.
at 10am, 4 minutes is ahead
at 10:30am, 2 minutes ahead
at 11:00, 0 minute ahead
at 11:30, 2 minutes late
at 12:00pm, 4 minutes late and so on...
hope that helps..