Math CentralQuandaries & Queries


Question from puchu:

A student was saving an average of £2 per week for 25 weeks. He then found a part time job and after total of 45 weeks his average savings rose to £9 per week
How much did he save over 20 weeks after finding job?


Suppose he saved £x for the 20 weeks in the new job. His total savings would then be $25 \times £2 + 20 \times £x.$ What would his average savings be over the 45 weeks? Solve for x.


About Math Central


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.
Quandaries & Queries page Home page University of Regina PIMS