Mrs Attia's Weekly Maths Challenge

Have a go at Mrs Attia's  challenge.

Record your working out and solution and email to Mrs Attia at tghobry@gladpark.brent.sch.uk 

Have fun and good luck!

Mr. Reed writes a number on the board.           
Ali finds 1/2 of the number.
Sophie finds 1/3 of the number.
Ali’s number is 7 more than Sophie’s number.
What is the number Mr. Reed started with?