Question

This is a Mathswatch question!
Steven charges the following for repairing washing machines:
£24 call-out charge + £14 for each half-hour he spends on the repair.
If a repair casts £66, how long did it take?

Answer 1

Answer:

90mins or 1hr and 30mins

Step-by-step explanation:

£66 - £24 = £42

14+14= 28

42-28= 14

so thats 14+14+14

3x30=90