Amy earns £6 for every hour she works Monday to Friday. She earns £8 for every hour she works on Saturday. One week Amy worked for 5 hours on Saturday - she earned £130 that week. How many hours did she work from Monday to Friday?
Amy worked for 5 hours on Saturday so she earned £8 x 5 = £40 on that day.
She earned £130 in total so we know she earned £130 - £40 = £90 working from Monday to Friday.
For every hour Amy worked from Monday to Friday she made £6 so we must divide her total pay by her hourly wage to find the number of hours she worked:
£90/£6 = 15 hours
Amy worked a total of 15 hours from Monday to Friday.
HM
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https://revisionmaths.com/sites/mathsrevision.net/files/imce/1MA0_1F_que_20160526.pdf Question 5