Will works 7 hours a day, 6 days a week. he is paid 9.20 an hour. he shares is wages with his mum in the ratio will: mum 5: 2

7 weeks.

Step-by-step explanation:

Will works 7 hours a day, 6 days a week. So total number of hours worked by Will is,

hours

He earns £9.20 an hour, so total money earned in a week by Will will be,



As he shares with his mother in a ration of 5:2, so he gets 2 parts out of 7 parts. (as 5+2=7)

So the actual amount saved by Will is,



The price of the car is £1932, so the number of week that Will will take is,

Cthe residual plot for model 1 has a non random pattern and is a good fit for the data